Killer whales are the only whale to prey on other warm-blooded animals. Like wolves, they are pack hunters and will even attack a lame blue whale.

Facts

The orca swims the fastest of all the members of the dolphin family. It can reach speeds of up to 50km/h, although for normal swimming, it moves at 10-15km/h.

It is possible to get quite close to killer whales in boats, as they seem to have no fear of them. An orca's jaws can open so wide that a small seal can be swallowed whole.

Orcas have 40 to 50 sharp teeth, which point towards the back of the throat. These enable it to tear big chunks from larger prey.

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