First Live Footage of Roughskin Dogfish Shark at 1,054 Meters

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Scientists have recorded the first-ever live footage of the roughskin dogfish shark (Centroscymnus owstonii) at depths of 1,054 meters in the Caribbean Sea near Little Cayman.

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The elusive shark, previously known only through bycatch specimens, made 54 passes in front of the camera over 11 minutes, marking its first confirmed sighting in the central Caribbean.

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Researchers used a baited remote underwater video system (BRUVS) with sardine bait, a non-invasive method for studying deep-sea marine life.

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This discovery stems from the first systematic investigation of deep-sea biodiversity in the Cayman Islands.

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The footage provided unprecedented insights into the natural behavior of the roughskin dogfish, including feeding habits.

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Video-based systems like dBRUV, emphasized by marine biologist Dr. Johanna Kohler, are vital for studying deep-sea creatures with minimal ecological disturbance.

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Published in the Journal of Fish Biology, these findings contribute to understanding biodiversity and protecting deep-sea ecosystems in the Caribbean region.

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The research team's collaborative effort provides crucial data for habitat protection and marine conservation policies, reinforcing the need for marine-protected areas.

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