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The open sea is the largest ecosystem, and also the least known. It would take up to ten centuries of intensive work to inventory the marine species to be found here. Whales, sharks, jellyfish, and migrating sea turtles are just some of the awe-inspiring creatures featured in this compelling program.
Subtitles: English
Starring:Steve Hughes
Directed by:Juan Antonio Rodríguez LlanoRamón Campoamor
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