Season 8 Episodes4
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C
Craig Sechler
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Sponges: Oldest Creatures in the Sea?
Jun 22, 2016
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
Seasons18
Episode Summary
"Sponges: Oldest Creatures in the Sea?" is episode 1 of Changing Seas season 8. It aired on June 22, 2016.