This book describes a coral polyp's physical characteristics and behavior and tells how corals form colonies building coral reefs.

Includes index. Includes glossary.

What is a coral polyp? - Kinds of corals - Coral up close - A look at a coral's life - Building a coral reef - Different sorts of coral reefs - Parts of a coral reef - A colorful, crowded coral reef - Australia's awesome Great Barrier Reef - Taking care of coral reefs.