View full lesson: http://ed.ted.com/lessons/how-giant-sea-creatures-eat-tiny-sea-creatures-kelly-benoit-bird

It's a paradox of ocean life: The largest mammals, like dolphins and whales, survive on the tiniest food, like krill. (Picture trying to make a full meal out of flying kernels of popcorn!) So how do these big animals gather enough food to live? At TEDYouth 2012, Kelly Benoit-Bird discusses new research that shows large sea animals actually herding their tiny food into big, bitable chunks.

Talk by Kelly Benoit-Bird.

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