'Kingdom of the Oceans'

Nat Geo WILD's two-part special explores the wondrous inhabitants of the sea.

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National Geographic's "Kingdom of the Oceans"

Inhabitants of the Sea

A humpback whale leaps out of the water. "We're just beginning to understand how life works in the oceans," Hirshfield said. "We haven't even begin to scratch the surface." (Galatée Films)

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