The sperm whale is 11-20m in length. It is the largest of the whales. It has a waxy substance on its back. It also has a big hump on its back with several little humps.

They can be found in every ocean.

They prefer temperate and tropical waters.

This whale likes to eat plankton

Males under 25 years stay in bachelor groups. The gestation period is 14 to 16 months. When giving birth others surround it for help.

This animal is endangered for products.