Whales prefer to live in deep, open water. They often stay close to the surface, but they can also dive down to great depths. Some species, such as the sperm whale, can dive down more than 1,000 metres.
Whales need to come to the surface to breathe air. They do this by using a blowhole, which is an opening on the top of their head. When they breathe, they release a powerful stream of water and air through the blowhole.
Whales are social animals and live in groups called pods. The size of a pod can vary from a few individuals to hundreds of individuals. Whales communicate with each other using a variety of sounds, including clicks, whistles, and songs.
Whales are important members of the marine ecosystem. They help to keep the ocean healthy by eating plankton and other small organisms. They also play a role in the carbon cycle, which is the process by which carbon is recycled between the atmosphere and the ocean.