Killer Whale: The World's Largest Dolphin

What's black and white and weighs as much as two elephants? A killer whale. This fierce hunter is so huge that it can eat up to 500 pounds (227 kg) of meat in one day.

Look inside to find out the ways these giant sea creatures work as a team in order to catch enough food to eat. You'll also discover how they take care of their young and how they are able to say warm in some of the coldest waters in the world.