Clownfish do need warm water to live. Clownfish make their homes in sea anemones, which are another kind of animal that live on coral reefs. Maybe you've seen Nemo darting in and out of the wavy tentacles of a sea anemone? Sea anemones need warm water to live, and clownfish need sea anemones, so they both live on coral reefs!

Although clown fish live in warmer waters, coral reefs exist even in places where the water is very cold. Clown fish live in coral reefs because of the food and protection they provide.