Why do whales breach the surface of the water?

Whales breach the surface of the water for a variety of reasons, including communication, play, and parasite removal. By leaping out and slapping back into the water, they create loud sounds that may signal other whales. Breaching can also help dislodge barnacles or other irritants. This behaviour may be a display of strength or social bonding, making it a multifaceted part of whale life.