Crinoids have been around in various forms since before the age of dinosaurs. Now experts descend into the deep to study the animals from a submersible.

Living Fossils

Peter Thomas

Biggest Fish in the Sea

Season 5

Each summer, the world's largest known aggregation of whale sharks occurs just off the coast of Cancun, Mexico, giving experts the opportunity to learn more about the largest fish in the sea.

The unique oceanic conditions of the Galápagos Islands serve as a perfect natural laboratory to study how climate change may impact corals in the future.

Galápagos: Windows into the Future

Strange and prehistoric-looking, Smalltooth Sawfish were once coveted by anglers as popular trophy fish. But habitat loss and overfishing have greatly reduced the animals' range and landed them on the endangered species list in 2003.

Saving Sawfish

Produced by South Florida PBS in Miami, Florida, Changing Seas gives viewers a fish-eye view of life in the deep blue. Join scientists as they study earth’s last frontier and discover the mysteries of our liquid planet.

Living Fossils

Seasons18

Season 6 Episodes4

Cast1

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