This is one of the coolest things I have ever seen:
Whales are one of the most amazing creatures that live in the planet. They inhabit all oceans of the world.
Whales belong to the order cetacea, which means that they are mammals fully adapted to aquatic life. Like all cetaceans, including dolphins and porpoises, whales are descendants of land-living animals which returned to water after living millions of years in land.