Underwater life

The Census of Marine Life, a decade-long project encompassing more than 2,700 scientists across the world, sought to answer a basic but daunting question: What lives in the ocean? The census revealed thousands of new species. National Geographic's new book "Citizens of the Sea", captures many of them.



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Dec. 9, 2010

A closeup of the eye of a sperm whale (Physeter macrocephalus). These whales were prized for a waxy material used in candles, soaps and cosmetics. This image is from National Geographic's new book "Citizens of the Sea."

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