Coral reefs occupy less than 1% of the ocean floor, but they support 25% of all marine species with food and shelter. In this lavishly illustrated book for ages 7 to 10, marine ecologist and underwater explorer Erin Spencer provides fascinating, scientific information in a highly accessible format, including details about the types of coral, their anatomy and life cycle, where they live, how reefs develop, and the incredible diversity of marine animals that live among them, including aquarium favorites like clownfish, royal blue tangs, and sea turtles. Kids learn about the interdependent relationships of people and reefs and how human behavior puts reefs in danger, promising conservation work that scientists are undertaking, and solution-oriented ways kids and families can help in the effort.