How do whales breathe?

How do whales breathe?

A whale’s “nostrils” are called blowholes, and are on the top of its head. Some whales have one blowhole, and others have two. Whales cannot breathe underwater. But their lungs are simply enormous, and they can take huge quantities of air before they dive. They come to surface every few minutes to blow out a mixture of water and air, and take in breathe of fresh air.