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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.
- Released: Jan 01, 1970
- Runtime: 00:27:14 minutes
- Genre: Documentary
- Stars: Craig Sechler
- Network: PBS
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Se-6 Ep-1. Living Fossils 2014-06-18
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Se-6 Ep-2. Biggest Fish in the Sea 2014-06-18
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Se-6 Ep-4. Saving Sawfish 2014-06-25
