Changing Seas
Sponges: Oldest Creatures in the Sea? - Trailer
Preview: Season 8 Episode 801 | 3m 8sVideo has Closed Captions
Are sponges the oldest creatures in the sea? DNA research has cast doubt on that theory.
Until recently there was scientific consensus that sponges were the first animals to branch off the “Animal Tree of Life,” a kind of family tree for all living and extinct animals on earth. But recent DNA research has cast doubt on that theory, with some scientists suggesting that ctenophores, also known as comb jellies, are an older lineage.
Problems with Closed Captions? Closed Captioning Feedback
Problems with Closed Captions? Closed Captioning Feedback
Changing Seas is presented by your local public television station.
Major funding for this program was provided by the Batchelor Foundation, encouraging people to preserve and protect America’s underwater resources. Additional funding was provided by Diver’s Direct/Emocean Sports, inspiring the...
Changing Seas
Sponges: Oldest Creatures in the Sea? - Trailer
Preview: Season 8 Episode 801 | 3m 8sVideo has Closed Captions
Until recently there was scientific consensus that sponges were the first animals to branch off the “Animal Tree of Life,” a kind of family tree for all living and extinct animals on earth. But recent DNA research has cast doubt on that theory, with some scientists suggesting that ctenophores, also known as comb jellies, are an older lineage.
Problems with Closed Captions? Closed Captioning Feedback
How to Watch Changing Seas
Changing Seas is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
Providing Support for PBS.org
Learn Moreabout PBS online sponsorship
Support for PBS provided by:
Changing Seas is presented by your local public television station.
Major funding for this program was provided by the Batchelor Foundation, encouraging people to preserve and protect America’s underwater resources. Additional funding was provided by Diver’s Direct/Emocean Sports, inspiring the...