Amazing Facts about Whales for Kids Whales are very big animals. They usually live in the sea but they can also live in captivity in artificial pools. Some whales are very smart that people train them to perform different tricks at shows. Their beautiful characteristics and appearance make them very attractive to people. Here are some other facts that you may not know about whales: Whales are mammals just like humans. That means babies grow inside the mother until they are born. Then they are taken care of by their parents until they mature. Whales have fewer species than other animals. Female whales are called cows, while the male whales are called bulls. Baby whales are called calves.