They are mammals
They breath through a nose or nostril on the top of their heads. This is called a blowhole
They don't sleep because they need to be awake to breathe. Half the brain is awake and half goes to sleep
It weighs as much as 6.000 children. It is the largest animal
Some of them can dive under water for five hours
They aren't fish
Most whales live for about 40 years, but some species can live for over 100
Some types of them can communicate by "singing"
Some of them hunt for food in cold water, but migrate to warmer waters to give birth