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The harsh and competitive underwaterworld contains a wide array of marine animals surviving together in this wondrous realm. "Deep Encounters" reveals the hunters and the hunted -- including sharks and their prey. "Ocean Allies" illustrates the friendships and relationships creatures form to help each other survive. "Blue Voices" examines how air-breathing mammals and other unlikely animals cope with the special demands of aquatic life.
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- DVD
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- CC
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