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Oceanographer Dr. Sylvia Earle has led more than 50 expeditions worldwide involving more than 6,000 hours underwater, and has also set the record for the deepest solo untethered dive - 3,000 feet into the Pacific Ocean. She has served as the chief scientist of the National Oceanic and Atmospheric Administration, and is currently an explorer-in-residence at the National Geographic Society. At ideaCity2010, Sylvia discusses life underwater and the natural systems that keep us alive.

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Sylvia Earle's TED Prize wish to protect our oceans: Legendary ocean researcher Sylvia Earle shares astonishing images of the ocean -- and shocking stats about its rapid decline -- as she makes her TED Prize wish: that we will join her in protecting the vital blue heart of the planet.

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Here's how to protect the blue heart of the planet (TED Prize winner!): Legendary ocean researcher Sylvia Earle shares astonishing images of the ocean -- and shocking stats about its rapid decline -- as she makes her TED Prize wish: that we will join her in protecting the vital blue heart of the planet.

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