Glowing life in an underwater world: Edith Widder on TED.com

Some 80 to 90 percent of undersea creatures make light — and we know very little about how or why. Deep-sea biologist Edith Widder explores this glowing, sparkling, luminous world, sharing glorious images and surprising insight into the unseen depths (and brights) of the ocean. (Recorded on the Mission Blue Voyage, April 2010 on the National Geographic Endeavor, the Galápagos Islands, Ecuador. Duration: 17:20)

Watch Edith Widder’s talk on TED.com, where you can download this TEDTalk, rate it, comment on it and find other talks and performances from our archive of 600+ TEDTalks.