https://vid.freedif.org/videos/watch/784d9da2-c098-4ebd-8211-5f646d0388e4 Explore the incredible regenerative abilities of hydras, and get to know their biology to find out if they're really immortal. -- In 1740, naturalist Abraham Trembley found something shocking in pondwater. He couldn't tell if it was a plant or an animal, though its way of moving and consuming things seemed animal-like. But when he cut parts off or even split it in two, it regenerated, which was decidedly plant-like. So, what was this miraculous creature? Raymond Adkins explores the near-immortal biology of the hydra. Lesson by Raymond Adkins, directed by Sharon Colman. Support Our Non-Profit MissionSupport us on Patreon: http://t.ted.com/nlVpzFN Check out our merch: http://t.ted.com/upNeDi3Connect With UsSign up for our newsletter: http://t.ted.com/R7iMQzr Follow us on Facebook: http://t.ted.com/NKcsscO Find us on Twitter: http://t.ted.com/nXsWmpA Peep us on Instagram: http://t.ted.com/zuDVFXPKeep LearningView full lesson: https://ed.ted.com/lessons/meet-the-hydra-masters-of-immortality-raymond-adkins Dig deeper with additional resources: https://ed.ted.com/lessons/meet-the-hydra-masters-of-immortality-raymond-adkins/digdeeper Animator's website: https://www.sharoncolman.comThank you so much to our patrons for your support! Without you this video would not be possible! Vanessa Graulich, Vandana Gunwani, Abdulmohsin Almadi, AJ Lyon, Geoffrey Bultitude, Mi Mi, Thomas Rothert, Brian Elieson, Oge O, Weronika Falkowska, Nevin Spoljaric, Sid Chanpuriya, Anoop Varghese, David Yastremski, Noah Webb, Roberto Chena, Oliver Koo, Luke Pisano, Andrea Gordon, Aleksandar Donev, Nicole Klau Ibarra, Jesse Lira, Ezekiel Raui, Petr Vacek, Dennis, Olivia Fu, Kari Teffeau, Cindy Lai, Rajath Durgada Manjunath, Dan Nguyen, Chin Beng Tan, Tom Boman, Karen Warner, Iryna Panasiuk, Aaron Torres, Eric Braun, Sonja Worzewski, Michael Clement, Adam Berry, Ghaith Tarawneh, Nathan Milford, Tomas Beckett, Alice Ice, Eric Berman, Kurt Paolo Sevillano, Jennifer Heald, Megulo Abebe, isolwi, Kate Sem, and Ujjwal Dasu. Wed, 21 Oct 2026 11:15:33 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://vid.freedif.org https://vid.freedif.org/client/assets/images/icons/icon-1500x1500.png https://vid.freedif.org/videos/watch/784d9da2-c098-4ebd-8211-5f646d0388e4 All rights reserved, unless otherwise specified in the terms specified at https://vid.freedif.org/about and potential licenses granted by each content's rightholder.