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The ancestors of modern, squishy cephalopods like the octopus and the squid all had shells. In ancient times, their shell was their greatest asset but it eventually proved to be their biggest weakness.
First Air Date : Jun 26, 2017
Last Air date : Oct 14, 2022
Episode : 246 Episode
Season : 6 Season
Runtime: 10:14 minutes
Studio: PBS Digital Studios, YouTube
Country: United States of America
Crew:
