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One Ocean

Footage of marine life in different environments around the north, beginning with a tropical coral reef which has medicinal properties for dolphins, and is used as a tool by tusk fish. In Japan, a shipwreck is home to the Asian sheepshead wrasse, which can change gender, while in the polar north, walruses struggle to find ice floes for their pups to rest on as climate change takes its toll on the environment.

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  • Originally Aired October 29, 2017
  • Runtime 58 minutes
  • Content Rating United States of America TV-PG
  • Network BBC One
  • On Other Sites IMDB
Name Type Role
David Attenborough Writer
David Attenborough Host
Jonathan Smith Director