Watch a sea slug sever its own head… and survive

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Mike Wehner

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For the vast majority of animals on this planet, losing their head would be a near-instant death sentence. Creatures that have distinct heads typically use them to house a brain and other extremely vital organs, including sensory organs like the eyes. The head is obviously important, but it can rarely live without the body, which usually keeps the entire organism, including the head, alive. It's incredibly rare to find an animal that can survive after losing its head or its body, but a team of scientists from Nara Women's University in Japan just found not one, but two.

The animals are marine sea creatures called sea slugs. There are many varieties of sea slugs found in various parts of the world's oceans, but nobody had an inkling that the two species studied — Elysia cf. marginata and Elysia atroviridis — were capable of literally severing their own heads and then regrowing their entire bodies back. A new paper published in Current Biology reveals the incredible discovery.

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Watch a sea slug sever its own head… and survive originally appeared on BGR.com on Mon, 8 Mar 2021 at 23:17:42 EDT. Please see our terms for use of feeds.

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