Documenting a First Soft Coral Occurrence at the Ghogha Coast, Gulf of Cambay, India

Documenting a First Soft Coral Occurrence at the Ghogha Coast, Gulf of Cambay, India | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Documenting a First Soft Coral Occurrence at the Ghogha Coast, Gulf of Cambay, India Gopal Ram, Bharatsinh Gohil This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6409071/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract This study reports the first documented occurrence of a soft coral species in the highly dynamic and turbid intertidal zone of Ghogha, Bhavnagar, Gujarat, India. The discovery expands the known distribution of octocorals along India's western coast and provides insights into their adaptability to extreme environmental conditions. Specimen identification was based on detailed morphological analysis and habitat characterization. This finding highlights the region's previously underreported cnidarian diversity and underscores the necessity for comprehensive ecological surveys and targeted conservation strategies. Soft coral Ghogha Bhavnagar new record marine biodiversity ecological adaptation Figures Figure 1 Figure 2 1. Introduction Octocorals (Subclass: Octocorallia), comprising approximately 3,000 extant species globally \(\:\left[6\right]\) are vital components of marine benthic ecosystems, enhancing habitat complexity and supporting biodiversity. However, their documented diversity exhibits significant regional variations. While India harbors a relatively high diversity of octocorals, with 60 out of 111 global genera and over 208 of 793 global species \(\:\left[\text{14,16}\right]\) this disparity underscores the need for continued exploration and taxonomic studies within Indian waters. Extensive research on Indo-Pacific octocorals \(\:\left[\text{1,2},\text{3,4},\text{5,7},\text{10,11,17,18}\right]\) has highlighted their ecological significance, particularly in reef ecosystems. In India, studies on soft coral diversity have primarily focused on well-established reef systems, such as the Gulf of Mannar, Gulf of Kachchh, and the Andaman and Nicobar Islands. In contrast, the octocoral assemblages of the Gulf of Khambhat, a unique ecosystem characterized by extreme tidal amplitudes and sediment-laden waters, have received limited attention. Within the Gulf of Kachchh, initial documentation by \(\:\left[15\right]\) reported 13 soft coral species, later revised to 23 by \(\:\left[8\right]\) Subsequent studies have revealed additional species, further expanding the documented diversity within the Marine National Park, Gulf of Kachchh. These findings emphasize the growing understanding of octocoral diversity in marginal reef environments and the necessity for continued ecological and conservation-focused research. Typically, soft corals thrive in clear, low-sediment environments, making their presence in the highly turbid and dynamic habitats of Ghogha, characterized by extreme tidal fluctuations, high sediment loads, and strong currents, an ecologically significant observation. Despite research on coral assemblages along the Gujarat coast \(\:\left[\text{9,12,13,19}\right]\) systematic records from Bhavnagar, specifically Ghogha, are notably absent. This study provides the first confirmed record of a soft coral species from Ghogha, contributing to our understanding of coral distribution and resilience in these challenging marginal habitats. 2. Materials and Methods 2.1 Study Area The Ghogha coast, situated in the Bhavnagar district of Gujarat along the Gulf of Khambhat (Fig. 1), represents an ecologically significant intertidal zone characterized by extreme semi-diurnal tidal amplitudes. This dynamic environment encompasses diverse habitats, including mudflats, rocky intertidal zones, and sandy patches, with a sediment composition of silt, clay, and sand, supporting a rich benthic community. Fluctuating salinity, driven by freshwater influx, and strong tidal currents, enhancing nutrient mixing, further contribute to the unique ecosystem. The region harbors a diverse marine biodiversity, including gastropods, bivalves, polychaetes, crustaceans, echinoderms, seaweeds, and seagrass beds, which provide essential food and habitat. However, anthropogenic pressures, such as port development, mechanized fishing, pollution, and habitat disturbance, coupled with environmental stressors like rising sea temperatures, ocean acidification, and coastal erosion, pose significant threats to the integrity of this marine ecosystem. 2.2 Observations Direct visual examination and photographic documentation of coral species were performed in situ during the lowest low tide, avoiding specimen collection. Detailed morphological analysis of the captured images enabled accurate taxonomic classification, focusing on distinguishing features observed within the natural habitat. 2.3 Methods for water quality parameters Environmental conditions for soft coral habitat were assessed using standardized methods. Substrate type was determined through visual observation and sediment sieving. Dissolved oxygen (DO) and biological oxygen demand (BOD) were measured using Winkler titration and incubation methods, respectively. Total dissolved solids (TDS) and electrical conductivity (EC) were quantified using digital meters, while salinity was determined refractometrically. Temperature and pH were measured using calibrated thermometers and pH meters, respectively. Turbidity was assessed nephelometrically. Nutrient parameters, including ammonia (NH₃), nitrite (NO₂⁻), nitrate (NO₃⁻), and phosphate (PO₄³⁻), were analyzed using the Fauna Marin AquaHomeTest Kit. Carbonate hardness (KH), calcium (Ca), magnesium (Mg), and potassium (K) were determined using titration-based Fauna Marin test kits. These standardized methods ensured accurate quantification of physicochemical parameters, facilitating robust ecological assessments and informing conservation strategies for marine habitats. 3. Results 3.1 Habitat Characteristics: Substrate type, temperature, salinity, and other relevant parameters Table-1: representing the measured habitat characteristics, including substrate type, temperature, salinity, dissolved oxygen, pH, and nutrient levels, recorded at the soft coral observation site in Ghogha. Sr.No. Parameter Observed Value Ideal Range for Soft Corals 1. Substrate type Small rock with unstable muddy Hard, stable surface 2. DO (Dissolved Oxygen) 6.72 mg/L 5-7 mg/L 3. BOD (Biological Oxygen Demand) 1.12 mg/L <2 mg/L 4. TDS (Total Dissolved Solids) 565 ppm 300-800 ppm 5. EC (Electrical Conductivity) 1221 µS/cm 1000-1500 µS/cm 6. Salinity 25.5 PSU 25-37 PSU 7. Temperature 31°C 24-30°C 8. pH 8.6 7.9-8.4 9. Turbidity (NTU) 670 NTU 0-5 NTU 10. NH₃ (Ammonia) ≤0.15 mg/L <0.2 mg/L 11. NO₂⁻ (Nitrite) 0.01 mg/L <0.02 mg/L 12. NO₃⁻ (Nitrate) 0.05 mg/L <1 mg/L 13. PO₄³⁻ (Phosphate) 0.02 mg/L <0.1 mg/L 14. KH (Carbonate Hardness) 10 dKH 7-12 dKH 15. Ca (Calcium) 392 mg/L 380-450 mg/L 16. Mg (Magnesium) 1380 mg/L 1200-1400 mg/L 17. K (Potassium) 750 mg/L 350-450 mg/L This study documents the first recorded occurrence of soft corals within the Ghogha intertidal zone, a marine environment characterized by high turbidity, unstable substrate, and specific deviations in physicochemical parameters. Water quality analysis(Table 1), revealed that while dissolved oxygen (6.72 mg/L), biological oxygen demand (1.12 mg/L), salinity (25.5 PSU), and major nutrient concentrations (NH₃, NO₂⁻, NO₃⁻, PO₄³⁻) were within typical ranges, significant deviations were observed in turbidity (670 NTU), pH (8.6), and potassium (750 mg/L). These findings challenge the established understanding of soft coral ecological requirements, indicating potential local adaptations or resilience to these suboptimal conditions. Further research is essential to elucidate the mechanisms enabling soft coral survival in such dynamic coastal environments, with implications for coral ecology and conservation strategies. 3.2 Specimen Collection and Identification The soft coral colony was observed on the lower intertidal rocks near Ghogha (Fig. 2), an area within the Gulf of Cambay (Khambhat) known for dynamic tidal exposure. The specimen, observed within the shallow intertidal zone of Ghogha, Gujarat, was identified to the family level based on in situ morphological analysis and comparison with standard taxonomic references. The specimen exhibits characteristics consistent with the order Alcyonacea, subclass Octocorallia, and family Gorgoniidae, potentially within the genus Gorgonia . Morphological Identification and Habitat Characterization: Key Morphological Features: Reticulated Branching Pattern: The specimen displays a delicate, fan-shaped, reticulated branching pattern, a characteristic feature of Gorgoniidae. This structure facilitates adaptation to hydrodynamic forces within the dynamic intertidal environment. Proteinaceous Axial Skeleton: The specimen possesses a soft, flexible, protein-based axial skeleton composed of gorgonin, distinguishing it from scleractinian corals. This feature allows for pliability and resilience in turbulent waters. Sclerites: White, punctate structures observed on the specimen’s surface are consistent with sclerites, calcareous spicules embedded within the coenenchyme. These structures are crucial for both structural support and taxonomic identification within Gorgoniidae. Coloration: The pinkish hue of the specimen aligns with the diverse color spectrum observed in Gorgoniidae, which commonly includes pink, red, orange, and yellow variations in shallow coastal habitats. Habitat Description: The specimen was observed in the intertidal zone of Ghogha, a habitat consistent with the known distribution of Gorgoniidae in shallow coastal, particularly rocky, intertidal and subtidal zones. Limitations and Future Research: Due to the absence of collection permits, a comprehensive taxonomic assessment, including microscopic examination of sclerite morphology, histological analysis, and molecular sequencing, was not performed. Future studies, contingent upon obtaining appropriate research permissions, are required to confirm species-level identification and assess the ecological significance of this Gorgoniidae occurrence. These studies will enhance our understanding of octocoral diversity and adaptation within the unique environmental conditions of the Ghogha coast. Observation Details: Collection Status: Not Collected Observation Date: 2025-03-31 3.3 Ecological Observations: Ecological observations of the observed Gorgoniidae specimen were conducted within the lower intertidal zone of Ghogha. Habitat: The specimens were exclusively observed within the lower intertidal zone, specifically along the margins of three distinct tide pools. Population Density: Estimated 25-30 individual colonies were recorded within the surveyed area. Colony Dimensions: Colony dimensions were measured in situ, revealing a range of sizes. Smaller colonies exhibited branch lengths of approximately 5.3 cm, while larger colonies reached lengths of up to 12.3 cm and widths of 14.8 cm. 4. Discussion The discovery of a soft coral within the intertidal zone of Ghogha, Bhavnagar, represents a significant addition to the documented marine biodiversity of Gujarat. Typically, octocorals, particularly those belonging to the family Gorgoniidae, are associated with stable, clear water environments. The observed occurrence of these organisms in the turbid and highly dynamic intertidal zone of Ghogha suggests a remarkable degree of ecological resilience and adaptability. Environmental data revealed several environmental stressors considered suboptimal for coral survival, including elevated turbidity (670 NTU), fluctuating salinity (25.5 PSU), and alkaline pH (8.6). Despite these conditions, the observed coral colonies thrived on rocky substrates within tide pools, indicating that localized microhabitats may provide refugia from environmental extremes, enabling the persistence of sensitive organisms like octocorals. This observation aligns with reports of adaptive mechanisms in other soft corals inhabiting sediment-laden environments, such as mucus secretion and sediment-shedding behaviors. The presence of Gorgoniidae species in the Gulf of Khambhat presents intriguing biogeographical implications. Previous coral studies in Gujarat have predominantly focused on the more established reef systems of the Saurashtra coast, resulting in limited understanding of octocoral distribution within the Gulf of Khambhat. This finding suggests a potentially broader distribution of octocorals in the region, possibly facilitated by strong tidal currents influencing larval dispersal and recruitment. The observed population, consisting of 25–30 colonies within three tide pools, indicates a localized yet stable population, necessitating continued ecological monitoring. However, increasing anthropogenic pressures, including port development, sedimentation, and coastal pollution, pose substantial threats to these coral populations. Sediment overload can impede polyp feeding and respiration, while infrastructure development may destabilize substrates essential for larval settlement and colony growth. Consequently, long-term ecological monitoring and detailed studies are imperative to understand the adaptive strategies of these species and to develop effective conservation strategies for intertidal coral habitats along the Gujarat coastline. 5. Conclusion This study documents the first confirmed occurrence of a soft coral species within the intertidal zone of Ghogha, Bhavnagar, expanding the documented distribution of octocorals along the Gujarat coastline. The observed persistence of Gorgoniidae species in this turbid, high-energy environment challenges prevailing assumptions regarding coral habitat preferences, highlighting their significant ecological plasticity. These findings underscore the imperative for further research to elucidate the adaptive mechanisms employed by soft corals in marginal habitats and to comprehensively assess their ecological roles. Future research initiatives should prioritize genetic analyses to establish definitive species identification, long-term ecological monitoring to track population dynamics, and detailed assessments of environmental stressors impacting coral health. Furthermore, conservation strategies must recognize the ecological significance of intertidal soft coral assemblages in maintaining coastal biodiversity and ecosystem resilience. The effective protection of these species and their habitats is crucial for preserving the ecological integrity of India’s dynamic coastal ecosystems. Declarations Acknowledgments The author extends sincere gratitude to Rajdeepsinh Zala, Shubham, Kamlesh, Kajal Valiya, Nayana Dabhi, Simran Popat, and the local fishermen of Ghogha for their invaluable field assistance and local expertise. The author also acknowledges the technical support and insightful discussions provided by Dr. Anjanaba Vala, Dishant Parasariya, Deven Mehta (Khitij Foundation), Aamir Matli, Karan Thakkar, and Mohhomad Nisin. Finally, the author expresses appreciation to Maharaja Krishnakumarsinhji Bhavnagar University and the Department of Life Sciences for their academic and institutional support. Their collective contributions were essential to the completion of this research. Funding Declaration This research did not receive any external financial support. All fieldwork, data collection, and manuscript preparation were carried out independently by the author without funding from governmental, non-governmental, or private institutions. Consent to Publish declaration: not applicable. This manuscript does not contain any individual person’s data in any form, including images or personal details, and therefore does not require consent for publication. Consent to Participate declaration: not applicable. The study did not involve human participants, interviews, or any activities necessitating informed consent procedures. Ethics declaration: not applicable. This research involved non-invasive observational documentation of marine benthic fauna. No experiments on animals or interactions with human subjects were conducted, and no ethical clearance was required. Clinical trial number: not applicable. This study is not a clinical trial, as it does not involve human participants, medical interventions, or therapeutic outcomes. Instead, it is an ecological field-based observation focusing on marine biodiversity. Author Contributions: Gopal Ram: Conceptualization, fieldwork, data collection, manuscript writing, and preparation of figures and tables. Bharatsinh Gohil: Supervision, critical review, identification verification, and final approval of the manuscript. Competing Interests: The authors declare no financial, personal, or academic conflicts of interest related to this study. All research was conducted independently and objectively. References Alderslade, P., & Shirwaiker, P. (1991). New species and records of alcyonacean soft corals from the Indo-Pacific region. Journal of Natural History, 25(4), 949-1000. Benayahu, Y. (1985). Faunistic composition and zoogeographical affinities of Red Sea soft corals. Marine Ecology Progress Series, 24, 121-132. Benayahu, Y. (1990). On some Octocorallia (Alcyonacea) from New Caledonia and Chesterfield Islands. Zoologische Mededelingen Leiden, 64, 113-120. Benayahu, Y. (1993). Soft corals (Octocorallia: Alcyonacea) of the southern Indo-Pacific: Species assemblages and their zoogeographical affinities. Bulletin of Marine Science, 52, 509-520. Benayahu, Y. (1995). Comparative studies on reproductive patterns in soft corals from the Indo-Pacific and the Red Sea. Hydrobiologia, 298, 115-120. Daly, M., Brugler, M. R., Cartwright, P., Collins, A. G., Dawson, M. N., Fautin, D. G., & Wörheide, G. (2007). The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus. Zootaxa, 1668(1), 127-182. Dinesen, Z. D. (1983). Patterns in the distribution of soft corals across the central Great Barrier Reef. Coral Reefs, 1, 229-236. Dixit, R., Kumar, J., & Apte, D. (2010). A checklist of alcyonacean soft corals from the Gulf of Kachchh, Gujarat. Zootaxa, 2568, 35-50. Kumar, J., Apte, D., & Subramanian, B. R. (2018). Soft coral diversity along the Gujarat coast with new records from the Gulf of Kachchh. Indian Journal of Marine Sciences, 47(2), 211-220. Lasker, H. R. (1988). Dynamics of octocoral populations: The effect of predators and competition on Alcyonium siderium. Ecology, 69, 1578-1588. Ofwegen, L. P. van, & Benayahu, Y. (1992). New species of Sinularia (Octocorallia: Alcyonacea) from the Indo-Pacific. Zoologische Mededelingen Leiden, 66, 405-429. Patel, M. I., Apte, D., & Venkataraman, K. (1993). Distribution and taxonomy of soft corals in the Gulf of Kachchh. Records of the Zoological Survey of India, 92, 155-165. Pillai, C. S. G., & Patel, M. I. (1988). Soft coral diversity and distribution along the Gujarat coast. Proceedings of the National Symposium on Coral Reefs, 1, 175-182. Venkataraman, K. (2011). Diversity and distribution of corals in India. Current Science, 100(1), 68-75. Venkataraman, K., Rajan, P. T., & Raghunathan, C. (2004). Status survey of coral reefs in the Gulf of Kachchh. Records of the Zoological Survey of India, 102, 29-38. Veron, J. E. N. (2000). Corals of the World. Townsville, Australia: Australian Institute of Marine Science. Verseveldt, J., & Ofwegen, L. P. van (1991). Soft corals (Octocorallia: Alcyonacea) from the Indo-Pacific region with a description of a new species. Zoologische Mededelingen Leiden, 65, 249-265. Yamazato, K., Yoshimoto, E., & Kai, H. (1981). Ecological studies on octocorals of the Ryukyu Islands. Proceedings of the Fourth International Coral Reef Symposium, 2, 249-255. Zoological Survey of India. (2003). A report on the biodiversity of Gulf of Kachchh Marine National Park and Sanctuary. Kolkata, India: Zoological Survey of India. Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6409071","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":456870779,"identity":"a32a3281-cf09-4ac8-b84d-29808114dbcd","order_by":0,"name":"Gopal Ram","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA8klEQVRIiWNgGAWjYLCCB0DMxszYcOADiMFOjJYEIOZjb258OAOsl1gtcjzHm415QDxCWuTdew9+SNxjF80mkdgmbfNrmzwfMwPjh485uLUYnjmXLJHwLDm3DaQlt++2YRszA7PkzG14tMzIMZBIOMAM1dJzmxGohY2ZF78W4x8JB+ohWix7btsT1CIvkWMGtOVwbhvPwWZjhh+3EwlqMeA5l2aRcOB4bht7Y+PD3obbyW3MjM14/SLf3nv4xocD1bnzm9kfHPjx57bt/Pbmgx8+4rPlAA8Sj7ENTDbgVg+ypQFZC8MfvIpHwSgYBaNghAIArwFVEeCuH8IAAAAASUVORK5CYII=","orcid":"","institution":"Maharaja Krishnakumarsinhji Bhavnagar University","correspondingAuthor":true,"prefix":"","firstName":"Gopal","middleName":"","lastName":"Ram","suffix":""},{"id":456870780,"identity":"81a2ddea-5765-4e1e-96a6-9fd5e431b90c","order_by":1,"name":"Bharatsinh Gohil","email":"","orcid":"","institution":"Maharaja Krishnakumarsinhji Bhavnagar University","correspondingAuthor":false,"prefix":"","firstName":"Bharatsinh","middleName":"","lastName":"Gohil","suffix":""}],"badges":[],"createdAt":"2025-04-09 07:23:16","currentVersionCode":1,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-6409071/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6409071/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":83042858,"identity":"c7627709-418b-49c8-b056-b62d31da51f8","added_by":"auto","created_at":"2025-05-19 11:04:25","extension":"png","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":1131961,"visible":true,"origin":"","legend":"\u003cp\u003eGhogha, Bhavnagar, Gujarat, India\u003c/p\u003e","description":"","filename":"floatimage1.png","url":"https://assets-eu.researchsquare.com/files/rs-6409071/v1/473225fdd39d4431a838677c.png"},{"id":83042590,"identity":"2fd47f46-7a46-48c2-916a-0b25c2b8e5bc","added_by":"auto","created_at":"2025-05-19 10:56:25","extension":"jpeg","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":327653,"visible":true,"origin":"","legend":"\u003cp\u003eFirst Recorded Soft Coral Species from Ghogha, Gujarat.\u003c/p\u003e","description":"","filename":"floatimage2.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-6409071/v1/a8251cbe7541146022eafe2c.jpeg"},{"id":87092266,"identity":"c5096590-4551-491d-88cf-6bbb477a4215","added_by":"auto","created_at":"2025-07-19 09:01:54","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2115670,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6409071/v1/93115abe-5e52-4fe1-941b-fb1490fc073e.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Documenting a First Soft Coral Occurrence at the Ghogha Coast, Gulf of Cambay, India","fulltext":[{"header":"1. Introduction","content":"\u003cp\u003eOctocorals (Subclass: Octocorallia), comprising approximately 3,000 extant species globally \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:\\left[6\\right]\\)\u003c/span\u003e\u003c/span\u003e are vital components of marine benthic ecosystems, enhancing habitat complexity and supporting biodiversity. However, their documented diversity exhibits significant regional variations. While India harbors a relatively high diversity of octocorals, with 60 out of 111 global genera and over 208 of 793 global species \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:\\left[\\text{14,16}\\right]\\)\u003c/span\u003e\u003c/span\u003e this disparity underscores the need for continued exploration and taxonomic studies within Indian waters.\u003c/p\u003e \u003cp\u003eExtensive research on Indo-Pacific octocorals \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:\\left[\\text{1,2},\\text{3,4},\\text{5,7},\\text{10,11,17,18}\\right]\\)\u003c/span\u003e\u003c/span\u003ehas highlighted their ecological significance, particularly in reef ecosystems. In India, studies on soft coral diversity have primarily focused on well-established reef systems, such as the Gulf of Mannar, Gulf of Kachchh, and the Andaman and Nicobar Islands. In contrast, the octocoral assemblages of the Gulf of Khambhat, a unique ecosystem characterized by extreme tidal amplitudes and sediment-laden waters, have received limited attention.\u003c/p\u003e \u003cp\u003eWithin the Gulf of Kachchh, initial documentation by \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:\\left[15\\right]\\)\u003c/span\u003e\u003c/span\u003e reported 13 soft coral species, later revised to 23 by \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:\\left[8\\right]\\)\u003c/span\u003e\u003c/span\u003e Subsequent studies have revealed additional species, further expanding the documented diversity within the Marine National Park, Gulf of Kachchh. These findings emphasize the growing understanding of octocoral diversity in marginal reef environments and the necessity for continued ecological and conservation-focused research.\u003c/p\u003e \u003cp\u003eTypically, soft corals thrive in clear, low-sediment environments, making their presence in the highly turbid and dynamic habitats of Ghogha, characterized by extreme tidal fluctuations, high sediment loads, and strong currents, an ecologically significant observation. Despite research on coral assemblages along the Gujarat coast \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\:\\left[\\text{9,12,13,19}\\right]\\)\u003c/span\u003e\u003c/span\u003e systematic records from Bhavnagar, specifically Ghogha, are notably absent. This study provides the first confirmed record of a soft coral species from Ghogha, contributing to our understanding of coral distribution and resilience in these challenging marginal habitats.\u003c/p\u003e"},{"header":"2. Materials and Methods","content":"\u003cdiv id=\"Sec3\" class=\"Section2\"\u003e\n \u003ch2\u003e2.1 Study Area\u003c/h2\u003e\n \u003cp\u003eThe Ghogha coast, situated in the Bhavnagar district of Gujarat along the Gulf of Khambhat (Fig. 1), represents an ecologically significant intertidal zone characterized by extreme semi-diurnal tidal amplitudes. This dynamic environment encompasses diverse habitats, including mudflats, rocky intertidal zones, and sandy patches, with a sediment composition of silt, clay, and sand, supporting a rich benthic community. Fluctuating salinity, driven by freshwater influx, and strong tidal currents, enhancing nutrient mixing, further contribute to the unique ecosystem. The region harbors a diverse marine biodiversity, including gastropods, bivalves, polychaetes, crustaceans, echinoderms, seaweeds, and seagrass beds, which provide essential food and habitat. However, anthropogenic pressures, such as port development, mechanized fishing, pollution, and habitat disturbance, coupled with environmental stressors like rising sea temperatures, ocean acidification, and coastal erosion, pose significant threats to the integrity of this marine ecosystem.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv id=\"Sec4\" class=\"Section2\"\u003e\n \u003ch2\u003e2.2 Observations\u003c/h2\u003e\n \u003cp\u003eDirect visual examination and photographic documentation of coral species were performed in situ during the lowest low tide, avoiding specimen collection. Detailed morphological analysis of the captured images enabled accurate taxonomic classification, focusing on distinguishing features observed within the natural habitat.\u003c/p\u003e\n\u003c/div\u003e\n\u003cdiv id=\"Sec5\" class=\"Section2\"\u003e\n \u003ch2\u003e2.3 Methods for water quality parameters\u003c/h2\u003e\n \u003cp\u003eEnvironmental conditions for soft coral habitat were assessed using standardized methods. Substrate type was determined through visual observation and sediment sieving. Dissolved oxygen (DO) and biological oxygen demand (BOD) were measured using Winkler titration and incubation methods, respectively. Total dissolved solids (TDS) and electrical conductivity (EC) were quantified using digital meters, while salinity was determined refractometrically. Temperature and pH were measured using calibrated thermometers and pH meters, respectively. Turbidity was assessed nephelometrically. Nutrient parameters, including ammonia (NH₃), nitrite (NO₂⁻), nitrate (NO₃⁻), and phosphate (PO₄\u0026sup3;⁻), were analyzed using the Fauna Marin AquaHomeTest Kit. Carbonate hardness (KH), calcium (Ca), magnesium (Mg), and potassium (K) were determined using titration-based Fauna Marin test kits. These standardized methods ensured accurate quantification of physicochemical parameters, facilitating robust ecological assessments and informing conservation strategies for marine habitats.\u003c/p\u003e\n\u003c/div\u003e"},{"header":"3. Results","content":"\u003cp\u003e\u003cstrong\u003e3.1 Habitat Characteristics: Substrate type, temperature, salinity, and other relevant parameters\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTable-1: representing the measured habitat characteristics, including substrate type, temperature, salinity, dissolved oxygen, pH, and nutrient levels, recorded at the soft coral observation site in Ghogha.\u003c/strong\u003e\u003c/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eSr.No.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eParameter\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eObserved Value\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eIdeal Range for Soft Corals\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e1.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eSubstrate type\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003eSmall rock with unstable muddy\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003eHard, stable surface\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e2.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eDO (Dissolved Oxygen)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e6.72 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e5-7 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e3.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eBOD (Biological Oxygen Demand)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e1.12 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u0026lt;2 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e4.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eTDS (Total Dissolved Solids)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e565 ppm\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e300-800 ppm\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e5.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eEC (Electrical Conductivity)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e1221 \u0026micro;S/cm\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e1000-1500 \u0026micro;S/cm\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e6.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eSalinity\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e25.5 PSU\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e25-37 PSU\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e7.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eTemperature\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e31\u0026deg;C\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e24-30\u0026deg;C\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e8.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003epH\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e8.6\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e7.9-8.4\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e9.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eTurbidity (NTU)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e670 NTU\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e0-5 NTU\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e10.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eNH₃\u0026nbsp;(Ammonia)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u0026le;0.15 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u0026lt;0.2 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e11.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eNO₂⁻\u0026nbsp;(Nitrite)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e0.01 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u0026lt;0.02 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e12.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eNO₃⁻\u0026nbsp;(Nitrate)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e0.05 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u0026lt;1 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e13.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003ePO₄\u0026sup3;⁻\u0026nbsp;(Phosphate)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e0.02 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e\u0026lt;0.1 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e14.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eKH (Carbonate Hardness)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e10 dKH\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e7-12 dKH\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e15.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eCa (Calcium)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e392 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e380-450 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e16.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eMg (Magnesium)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e1380 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e1200-1400 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"top\" style=\"width: 64px;\"\u003e\n \u003cp\u003e\u003cstrong\u003e17.\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 244px;\"\u003e\n \u003cp\u003eK (Potassium)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e750 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 154px;\"\u003e\n \u003cp\u003e350-450 mg/L\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003eThis study documents the first recorded occurrence of soft corals within the Ghogha intertidal zone, a marine environment characterized by high turbidity, unstable substrate, and specific deviations in physicochemical parameters. Water quality analysis(Table 1), revealed that while dissolved oxygen (6.72 mg/L), biological oxygen demand (1.12 mg/L), salinity (25.5 PSU), and major nutrient concentrations (NH₃, NO₂⁻, NO₃⁻, PO₄\u0026sup3;⁻) were within typical ranges, significant deviations were observed in turbidity (670 NTU), pH (8.6), and potassium (750 mg/L). These findings challenge the established understanding of soft coral ecological requirements, indicating potential local adaptations or resilience to these suboptimal conditions. Further research is essential to elucidate the mechanisms enabling soft coral survival in such dynamic coastal environments, with implications for coral ecology and conservation strategies.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003e3.2 Specimen Collection and Identification\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe soft coral colony was observed on the lower intertidal rocks near Ghogha (Fig. 2), an area within the Gulf of Cambay (Khambhat) known for dynamic tidal exposure. The specimen, observed within the shallow intertidal zone of Ghogha, Gujarat, was identified to the family level based on in situ morphological analysis and comparison with standard taxonomic references. The specimen exhibits characteristics consistent with the order Alcyonacea, subclass Octocorallia, and family Gorgoniidae, potentially within the genus \u003cem\u003eGorgonia\u003c/em\u003e.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMorphological Identification and Habitat Characterization:\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Morphological Features:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003eReticulated Branching Pattern:\u003c/strong\u003e The specimen displays a delicate, fan-shaped, reticulated branching pattern, a characteristic feature of Gorgoniidae. This structure facilitates adaptation to hydrodynamic forces within the dynamic intertidal environment.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003eProteinaceous Axial Skeleton:\u003c/strong\u003e The specimen possesses a soft, flexible, protein-based axial skeleton composed of gorgonin, distinguishing it from scleractinian corals. This feature allows for pliability and resilience in turbulent waters.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003eSclerites:\u003c/strong\u003e White, punctate structures observed on the specimen\u0026rsquo;s surface are consistent with sclerites, calcareous spicules embedded within the coenenchyme. These structures are crucial for both structural support and taxonomic identification within Gorgoniidae.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003eColoration:\u003c/strong\u003e The pinkish hue of the specimen aligns with the diverse color spectrum observed in Gorgoniidae, which commonly includes pink, red, orange, and yellow variations in shallow coastal habitats.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHabitat Description:\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe specimen was observed in the intertidal zone of Ghogha, a habitat consistent with the known distribution of Gorgoniidae in shallow coastal, particularly rocky, intertidal and subtidal zones.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eLimitations and Future Research:\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eDue to the absence of collection permits, a comprehensive taxonomic assessment, including microscopic examination of sclerite morphology, histological analysis, and molecular sequencing, was not performed. Future studies, contingent upon obtaining appropriate research permissions, are required to confirm species-level identification and assess the ecological significance of this Gorgoniidae occurrence. These studies will enhance our understanding of octocoral diversity and adaptation within the unique environmental conditions of the Ghogha coast.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eObservation Details:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003eCollection Status: Not Collected\u003c/li\u003e\n \u003cli\u003eObservation Date: 2025-03-31\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e\u003cstrong\u003e3.3 Ecological Observations:\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eEcological observations of the observed Gorgoniidae specimen were conducted within the lower intertidal zone of Ghogha.\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003eHabitat:\u003c/strong\u003e The specimens were exclusively observed within the lower intertidal zone, specifically along the margins of three distinct tide pools.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003ePopulation Density:\u003c/strong\u003e Estimated 25-30 individual colonies were recorded within the surveyed area.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003eColony Dimensions:\u003c/strong\u003e Colony dimensions were measured in situ, revealing a range of sizes. Smaller colonies exhibited branch lengths of approximately 5.3 cm, while larger colonies reached lengths of up to 12.3 cm and widths of 14.8 cm.\u003c/li\u003e\n\u003c/ul\u003e"},{"header":"4. Discussion","content":"\u003cp\u003eThe discovery of a soft coral within the intertidal zone of Ghogha, Bhavnagar, represents a significant addition to the documented marine biodiversity of Gujarat. Typically, octocorals, particularly those belonging to the family Gorgoniidae, are associated with stable, clear water environments. The observed occurrence of these organisms in the turbid and highly dynamic intertidal zone of Ghogha suggests a remarkable degree of ecological resilience and adaptability.\u003c/p\u003e \u003cp\u003eEnvironmental data revealed several environmental stressors considered suboptimal for coral survival, including elevated turbidity (670 NTU), fluctuating salinity (25.5 PSU), and alkaline pH (8.6). Despite these conditions, the observed coral colonies thrived on rocky substrates within tide pools, indicating that localized microhabitats may provide refugia from environmental extremes, enabling the persistence of sensitive organisms like octocorals. This observation aligns with reports of adaptive mechanisms in other soft corals inhabiting sediment-laden environments, such as mucus secretion and sediment-shedding behaviors.\u003c/p\u003e \u003cp\u003eThe presence of Gorgoniidae species in the Gulf of Khambhat presents intriguing biogeographical implications. Previous coral studies in Gujarat have predominantly focused on the more established reef systems of the Saurashtra coast, resulting in limited understanding of octocoral distribution within the Gulf of Khambhat. This finding suggests a potentially broader distribution of octocorals in the region, possibly facilitated by strong tidal currents influencing larval dispersal and recruitment. The observed population, consisting of 25\u0026ndash;30 colonies within three tide pools, indicates a localized yet stable population, necessitating continued ecological monitoring.\u003c/p\u003e \u003cp\u003eHowever, increasing anthropogenic pressures, including port development, sedimentation, and coastal pollution, pose substantial threats to these coral populations.\u003c/p\u003e \u003cp\u003eSediment overload can impede polyp feeding and respiration, while infrastructure development may destabilize substrates essential for larval settlement and colony growth. Consequently, long-term ecological monitoring and detailed studies are imperative to understand the adaptive strategies of these species and to develop effective conservation strategies for intertidal coral habitats along the Gujarat coastline.\u003c/p\u003e"},{"header":"5. Conclusion","content":"\u003cp\u003eThis study documents the first confirmed occurrence of a soft coral species within the intertidal zone of Ghogha, Bhavnagar, expanding the documented distribution of octocorals along the Gujarat coastline. The observed persistence of Gorgoniidae species in this turbid, high-energy environment challenges prevailing assumptions regarding coral habitat preferences, highlighting their significant ecological plasticity. These findings underscore the imperative for further research to elucidate the adaptive mechanisms employed by soft corals in marginal habitats and to comprehensively assess their ecological roles.\u003c/p\u003e \u003cp\u003eFuture research initiatives should prioritize genetic analyses to establish definitive species identification, long-term ecological monitoring to track population dynamics, and detailed assessments of environmental stressors impacting coral health. Furthermore, conservation strategies must recognize the ecological significance of intertidal soft coral assemblages in maintaining coastal biodiversity and ecosystem resilience. The effective protection of these species and their habitats is crucial for preserving the ecological integrity of India\u0026rsquo;s dynamic coastal ecosystems.\u003c/p\u003e"},{"header":"Declarations","content":"\u003cp\u003e\u003cstrong\u003eAcknowledgments\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe author extends sincere gratitude to Rajdeepsinh Zala, Shubham, Kamlesh, Kajal Valiya, Nayana Dabhi, Simran Popat, and the local fishermen of Ghogha for their invaluable field assistance and local expertise. The author also acknowledges the technical support and insightful discussions provided by Dr. Anjanaba Vala, Dishant Parasariya, Deven Mehta (Khitij Foundation), Aamir Matli, Karan Thakkar, and Mohhomad Nisin. Finally, the author expresses appreciation to Maharaja Krishnakumarsinhji Bhavnagar University and the Department of Life Sciences for their academic and institutional support. Their collective contributions were essential to the completion of this research.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunding Declaration\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThis research did not receive any external financial support. All fieldwork, data collection, and manuscript preparation were carried out independently by the author without funding from governmental, non-governmental, or private institutions.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eConsent to Publish declaration: not applicable.\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThis manuscript does not contain any individual person\u0026rsquo;s data in any form, including images or personal details, and therefore does not require consent for publication.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eConsent to Participate declaration: not applicable.\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe study did not involve human participants, interviews, or any activities necessitating informed consent procedures.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eEthics declaration: not applicable.\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThis research involved non-invasive observational documentation of marine benthic fauna. No experiments on animals or interactions with human subjects were conducted, and no ethical clearance was required.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eClinical trial number: not applicable.\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThis study is not a clinical trial, as it does not involve human participants, medical interventions, or therapeutic outcomes. Instead, it is an ecological field-based observation focusing on marine biodiversity.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAuthor Contributions:\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eGopal Ram:\u003c/strong\u003e Conceptualization, fieldwork, data collection, manuscript writing, and preparation of figures and tables.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eBharatsinh Gohil:\u003c/strong\u003e Supervision, critical review, identification verification, and final approval of the manuscript.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompeting Interests:\u003c/strong\u003e The authors declare no financial, personal, or academic conflicts of interest related to this study. All research was conducted independently and objectively.\u003c/p\u003e"},{"header":"References","content":"\u003col\u003e\n \u003cli\u003eAlderslade, P., \u0026amp; Shirwaiker, P. (1991). New species and records of alcyonacean soft corals from the Indo-Pacific region. Journal of Natural History, 25(4), 949-1000.\u003c/li\u003e\n \u003cli\u003eBenayahu, Y. (1985). Faunistic composition and zoogeographical affinities of Red Sea soft corals. Marine Ecology Progress Series, 24, 121-132.\u003c/li\u003e\n \u003cli\u003eBenayahu, Y. (1990). On some Octocorallia (Alcyonacea) from New Caledonia and Chesterfield Islands. Zoologische Mededelingen Leiden, 64, 113-120.\u003c/li\u003e\n \u003cli\u003eBenayahu, Y. (1993). Soft corals (Octocorallia: Alcyonacea) of the southern Indo-Pacific: Species assemblages and their zoogeographical affinities. Bulletin of Marine Science, 52, 509-520.\u003c/li\u003e\n \u003cli\u003eBenayahu, Y. (1995). Comparative studies on reproductive patterns in soft corals from the Indo-Pacific and the Red Sea. Hydrobiologia, 298, 115-120.\u003c/li\u003e\n \u003cli\u003eDaly, M., Brugler, M. R., Cartwright, P., Collins, A. G., Dawson, M. N., Fautin, D. G., \u0026amp; W\u0026ouml;rheide, G. (2007). The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus. Zootaxa, 1668(1), 127-182.\u003c/li\u003e\n \u003cli\u003eDinesen, Z. D. (1983). Patterns in the distribution of soft corals across the central Great Barrier Reef. Coral Reefs, 1, 229-236.\u003c/li\u003e\n \u003cli\u003eDixit, R., Kumar, J., \u0026amp; Apte, D. (2010). A checklist of alcyonacean soft corals from the Gulf of Kachchh, Gujarat. Zootaxa, 2568, 35-50.\u003c/li\u003e\n \u003cli\u003eKumar, J., Apte, D., \u0026amp; Subramanian, B. R. (2018). Soft coral diversity along the Gujarat coast with new records from the Gulf of Kachchh. Indian Journal of Marine Sciences, 47(2), 211-220.\u003c/li\u003e\n \u003cli\u003eLasker, H. R. (1988). Dynamics of octocoral populations: The effect of predators and competition on Alcyonium siderium. Ecology, 69, 1578-1588.\u003c/li\u003e\n \u003cli\u003eOfwegen, L. P. van, \u0026amp; Benayahu, Y. (1992). New species of Sinularia (Octocorallia: Alcyonacea) from the Indo-Pacific. Zoologische Mededelingen Leiden, 66, 405-429.\u003c/li\u003e\n \u003cli\u003ePatel, M. I., Apte, D., \u0026amp; Venkataraman, K. (1993). Distribution and taxonomy of soft corals in the Gulf of Kachchh. Records of the Zoological Survey of India, 92, 155-165.\u003c/li\u003e\n \u003cli\u003ePillai, C. S. G., \u0026amp; Patel, M. I. (1988). Soft coral diversity and distribution along the Gujarat coast. Proceedings of the National Symposium on Coral Reefs, 1, 175-182.\u003c/li\u003e\n \u003cli\u003eVenkataraman, K. (2011). Diversity and distribution of corals in India. Current Science, 100(1), 68-75.\u003c/li\u003e\n \u003cli\u003eVenkataraman, K., Rajan, P. T., \u0026amp; Raghunathan, C. (2004). Status survey of coral reefs in the Gulf of Kachchh. Records of the Zoological Survey of India, 102, 29-38.\u003c/li\u003e\n \u003cli\u003eVeron, J. E. N. (2000). Corals of the World. Townsville, Australia: Australian Institute of Marine Science.\u003c/li\u003e\n \u003cli\u003eVerseveldt, J., \u0026amp; Ofwegen, L. P. van (1991). Soft corals (Octocorallia: Alcyonacea) from the Indo-Pacific region with a description of a new species. Zoologische Mededelingen Leiden, 65, 249-265.\u003c/li\u003e\n \u003cli\u003eYamazato, K., Yoshimoto, E., \u0026amp; Kai, H. (1981). Ecological studies on octocorals of the Ryukyu Islands. Proceedings of the Fourth International Coral Reef Symposium, 2, 249-255.\u003c/li\u003e\n \u003cli\u003eZoological Survey of India. (2003). A report on the biodiversity of Gulf of Kachchh Marine National Park and Sanctuary. Kolkata, India: Zoological Survey of India.\u003c/li\u003e\n\u003c/ol\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Soft coral, Ghogha, Bhavnagar, new record, marine biodiversity, ecological adaptation","lastPublishedDoi":"10.21203/rs.3.rs-6409071/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6409071/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis study reports the first documented occurrence of a soft coral species in the highly dynamic and turbid intertidal zone of Ghogha, Bhavnagar, Gujarat, India. The discovery expands the known distribution of octocorals along India's western coast and provides insights into their adaptability to extreme environmental conditions. Specimen identification was based on detailed morphological analysis and habitat characterization. This finding highlights the region's previously underreported cnidarian diversity and underscores the necessity for comprehensive ecological surveys and targeted conservation strategies.\u003c/p\u003e","manuscriptTitle":"Documenting a First Soft Coral Occurrence at the Ghogha Coast, Gulf of Cambay, India","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-05-19 10:56:21","doi":"10.21203/rs.3.rs-6409071/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"1cd89a4a-388c-4290-b687-58e3c7122238","owner":[],"postedDate":"May 19th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-07-19T08:53:38+00:00","versionOfRecord":[],"versionCreatedAt":"2025-05-19 10:56:21","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6409071","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6409071","identity":"rs-6409071","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}