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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. Sylvia Earle has been at the frontier of deep ocean exploration for four decades. She's led more than 50 undersea expeditions, and she's been an equally tireless advocate for our oceans and the creatures who live in them.

Talk by Sylvia Earle.