Why Don’t Fish Freeze in Antarctica? I Antarctic Extremes скачать в хорошем качестве

Why Don’t Fish Freeze in Antarctica? I Antarctic Extremes

Under the ice in Antarctica is a world few people ever get to see. Subscribe! https://www.youtube.com/c/pbsterra?su… Bizarre creatures—ancient sponges, gigantic jellyfish, sea spiders, ribbon worms, and notothenioid fishes that manage not to freeze—make their home here. “Every time I come down here, every year, I always find something I haven’t seen before,” diver Steve Rupp says. To discover Antarctica’s dazzling hidden underbelly, host Arlo Pérez meets with Steve and his fellow Antarctic diver Rob Robbins, while host Caitlin Saks explores the McMurdo Aquarium with evolutionary physiologist Chi-Hing Christina Cheng. Arlo and Caitlin learn that the Antarctic marine realm is not only spectacular to see, but fascinating for scientists to study. The water is so cold that fish inhabiting it should freeze like an icicle, a phenomenon that evolutionary biologist Paul Cziko uses supercooled water, snow, and fish guts to demonstrate. So how do Antarctica’s fish, which penguins and seals rely on for food, survive in waters below their freezing point? To find out, Caitlin and Arlo go ice fishing with a local legend, biologist Art DeVries, who has been studying fish physiology in Antarctica since 1961. The secret is an evolutionary marvel that has major implications...for ICE CREAM. For more cool underwater footage, check out the channel for the McMurdo Oceanographic Observatory (MOO):    / @mooantarctica   Or, visit the MOO's website for LIVE (seasonal) underwater footage: https://moo-antarctica.net/live -- ***** PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateTerra ***** Hosted by Caitlin Saks and Arlo Pérez Editor/Digital Associate Producer: Arlo Pérez Producer: Caitlin Saks Field Director/Cinematographer: Zachary Fink Executive Producer: Julia Cort Coordinating Producer: Elizabeth Benjes Project Director: Pamela Rosenstein Production Assistance: Matthew Buckley, Emily Pattison, Sean Cuddihy Audio Mix: Heart Punch Studio Director of Audience Development: Dante Graves Senior Digital Producer: Ari Daniel Audience Engagement Editor: Sukee Bennett Outreach Manager: Gina Varamo Special thanks to the United States Antarctic Program Archival: Emily Stone, Getty Images, McMurdo Oceanographic Observatory, Paul Czkio, Paul Dayton / NSF, PH1 R.W. Milton / NSF, Rob Robbins, Shutterstock, Steven Rupp, Storyblocks Music: APM National corporate funding for NOVA is provided by Draper. Major funding for NOVA is provided by the David H. Koch Fund for Science, the Corporation for Public Broadcasting, and PBS viewers. Additional funding is provided by the NOVA Science Trust. Major funding for this project is provided by the National Science Foundation. Additional funding is provided by the Heising-Simons Foundation, The Kendeda Fund, the George D. Smith Fund, and the Richard Saltonstall Charitable Foundation. This material is based upon work supported by the National Science Foundation under Grant No. 1713552. Any opinions, findings, and conclusions or recommendations expressed are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. © WGBH Educational Foundation 2020