What kind of a animal is whale?

Whale is a marine mammal. They are the largest animals on Earth. Whales are warm-blooded, air-breathing mammals that live in the oceans and some rivers. Whales are classified into two groups: baleen whales and toothed whales. Baleen whales have large plates of baleen in their mouths that they use to filter food from the water. Toothed whales have teeth that they use to catch and eat prey. Whales communicate with each other using a variety of sounds, including clicks, whistles, and moans. Whales are social animals and often live in pods. Some species of whales migrate long distances each year.