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Where do squid, jellyfish and other sea creatures begin life? The story of a sea urchin reveals a stunningly beautiful saga of fertilization, development and growth in the ocean depths.Lesson by Tierney Thys, visualization by Christian Sardet (CNRS/Tara Oceans), Noé Sardet, and Sharif Mirshak (Plankton Chronicles Project, Parafilms).View the full lesson: http://ed.ted.com/lessons/how-life-begins-in-the-deep-ocean Learn more about your ad choices. Visit megaphone.fm/adchoices
