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Sponges: Oldest Creatures in the Sea?

Sponges: Oldest Creatures in the Sea?

Season 8 Episode 801
26:43
Puerto Rico: Resilience in Action

Puerto Rico: Resilience in Action

Season 18 Episode 1
26:42
The Seals of Sable Island

The Seals of Sable Island

Season 18 Episode 2
26:42
Engineering the Power of Waves

Engineering the Power of Waves

Season 18 Episode 3
26:42
Getting Sharked: Search for Solutions

Getting Sharked: Search for Solutions

Season 18 Episode 4
26:42
Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:35
Tuberculosis: The Forgotten Plague

Tuberculosis: The Forgotten Plague

Season 6 Episode 5
26:49
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Changing Seas

Sponges: Oldest Creatures in the Sea? - Trailer

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.
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Season 12 Episode 1204
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Season 12 Episode 1201
Florida’s Blue Holes: Oases in the Sea
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Season 11 Episode 1104
Mystery of the Humpback Whale Song
Experts study the purpose of a male humpback whale's song.
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Season 11 Episode 1103
Corals in Crisis
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Season 11 Episode 1102
Toxic Waters
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Season 10 Episode 1004
Fishing the Flats for Science
Scientists study tarpon, bonefish and permit to better understand their behaviors.
Lords of the Wetlands
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Season 10 Episode 1003
Lords of the Wetlands
Scientists work to save crocodiles through research and conservation.
Cryptic Critters
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Season 10 Episode 1002
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Deep underwater, on a shipwreck near Key West, lives a tiny potential new threat.
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Season 10 Episode 1001
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Modern technology is making it possible to correlate dolphin sounds and behavior.
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