Killer Whales are found in all the oceans of the world, mostly in the Arctic.

Killer Whales are one of the ocean's top preditors. They can feed on most any marine animal. They mostly prey on fish, but they also eat squid, sea turtles, sea gulls and other whales. Killer Whales can echolocate to find their prey.

Killer Whales have a white patch on each side of their heads, slightly above and behind the eye. This patch, looks like the eye from a distance. The eye patch actually helps to camouflage the eye.

Killer whales are mammals, so they have to breathe oxygen. They have a blowhole on top of their head to help them exhale air. Adults can stay under water for 14 minutes, young can stay under for about seven minutes before coming to the surface for air.

Although the worldwide population is unknown, we do know that Killer Whales are not endangered. In fact, in some areas of the Antarctic alone, their numbers are estimated at 180,000. Killer whales used to be hunted for their blubber, which can be made into oil. They were becoming endangered. They are now protected by the law.

However, they are harmed by pollution in the water, and harpooning.

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