Observations of mammalian predation on Pacific sleeper sharks in Southeast Alaska.

Observations of mammalian predation on Pacific sleeper sharks in Southeast Alaska. | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Ecology and Evolution This is a preprint and has not been peer reviewed. Data may be preliminary. 12 May 2026 V1 Latest version Share on Observations of mammalian predation on Pacific sleeper sharks in Southeast Alaska. Authors : Cindy Tribuzio A 0000-0002-7257-9766 [email protected] and John Moran [email protected] Authors Info & Affiliations https://doi.org/10.22541/authorea.15003215/v1 21 views 13 downloads Contents Abstract Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The predator-prey relationship between marine mammals and sharks may not be as well defined as originally believed. Both groups can be either predator or prey. In the case of Pacific sleeper shark, previous studies have documented the sharks predating upon juvenile Stellar sea lions and scavenging whale falls, while other studies have reported offshore killer whales predating upon Pacific sleeper shark. Here, we report two observations of likely marine mammal predation upon Pacific sleeper shark in Southeast Alaska; one of Stellar sea lions actively predating upon an approximately 2m shark; and the other a stranded 2.6m shark likely predated by killer whales. The observations reported herein are unique in that Stellar sea lions have not been documented to predate upon Pacific sleeper sharks and previous reports of killer whale predation upon Pacific sleeper shark have been near open ocean passages. Information & Authors Information Version history V1 Version 1 12 May 2026 Collection Ecology and Evolution Authors Affiliations Cindy Tribuzio A 0000-0002-7257-9766 [email protected] NOAA Fisheries Auke Bay Laboratories, Juneau, United States, 99801 View all articles by this author John Moran [email protected] NOAA Fisheries Auke Bay Laboratories, Juneau, United States, 99801 View all articles by this author Metrics & Citations Metrics Article Usage 21 views 13 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Cindy Tribuzio A, John Moran. Observations of mammalian predation on Pacific sleeper sharks in Southeast Alaska.. Authorea . 12 May 2026. DOI: https://doi.org/10.22541/authorea.15003215/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. 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