Extras

Nature

Ocean Giants: Deep Thinkers

Preview: S30 Ep9 | 30s

Airs Wednesday, April 4, 2012 at 8:00 p.m. ET/PT. Check your local listings.

Nature

Dolphin Bubble Play

Clip: S30 Ep9 | 1m 58s

What will dolphins make of the silvery rings of air produced by a bubble machine?

Nature

Dolphin Mud Walls

Clip: S30 Ep9 | 2m 11s

In Florida Bay, dolphins feed by creating walls of mud that trap nearby fish.