Hiding on the floor of Earth's tropical oceans are magnificent and colorful coral reefs. You may have seen coral in the local aquarium or heard of the Great Barrier Reef off the coast of Australia. But did you know that coral reefs . . .

• are actually living beings
• can grow to be larger than a skyscraper
• provide a home for a vast number of other underwater creatures

Award-winning science writer Seymour Simon takes readers under the sea to explore the world of coral reefs, with fascinating facts and stunning full-color photographs.

Find out how coral reefs grow to become one of the most impressive natural habitats on Earth and how they interact with sea creatures such as fish, sea urchins, sea stars, and more!

Also available as a paperback!