What can liquefy its limbs, throw up its own stomach and still live? Echinoderms, a group of sea creatures that can regenerate their own body parts! In this episode of Today I Learned, National Geographic Explorer Paul Bump tells you all about echinoderm’s incredible capacity for regeneration.
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Love crazy facts? We do too. Get ready to amaze your friends with some of the strangest facts you’ve ever heard. National Geographic explorers tell you new, obscure, and amazing things about the world (and beyond).

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Without much ability to make toxins, shoot out ink, or fight back, echinoderms have found a different way of escaping. Now, replacing body parts may sound crazy, but echinoderms do it all the time to evade predators.

The sea cucumber, a slow moving echinoderm, may not be able to outrun predators, but when under attack it can eviscerate its own guts as a distraction while it scoots away. When brittle stars sense a disturbance on one of their limbs they can liquefy that tissue and release the arm, only to regrow it later.

SERIES PRODUCER: Christopher Mattle
PRODUCER/EDITOR: Laurence Alexander
ASSOCIATE PRODUCER: Elaina Kimes

TIL: These Spiny Sea Creatures Can Regrow Lost Body Parts | Today I Learned
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