View full lesson: http://ed.ted.com/lessons/underwater-astonishments-david-gallo

David Gallo shows jaw-dropping footage of amazing sea creatures, including a color-shifting cuttlefish, a perfectly camouflaged octopus, and a Times Square's worth of neon light displays from fish who live in the blackest depths of the ocean.

Talk by David Gallo.

Learn more about your ad choices. Visit megaphone.fm/adchoices