A baby whale is called a calf. The mother whale gives birth under water. She pushes her calf to the surface so that it can breathe. A baby whale sucks milk from its mothers body. There is a bit on the upper part of the mouth called baleen .
Some whales eat krill .
The whales that have teeth hunt bigger animals. Killer whales are fierce hunters. A group of whales is called a pod . Whales in a pod hunt together. The male narwwhal has only two teeth.