A long time ago people used blubber to make oil for oil lamps before we had electricity. Nowadays, people use blubber to make margarine, soap, face creams, and lots more. People hunt the blue whales to get their blubber. The U.S. has now passed a law that no one is allowed to import whale products into the U.S. Other countries also have laws about whale hunting, and the International Whaling Commission, set up in 1946, makes rules about how many whales can be hunted. The blue whale is the largest animal that ever lived.
Some blue whales are bigger than the biggest dinosaur.
The biggest blue whale weighed the weight of 25 full-grown elephants. The heart of a blue whale is the size of a small car. The tongue of a blue whale weighs as much as an elephant. There are two kinds of whales. One of them is the toothed whale including the killer whale and the sperm whale.