Oceans cover three-quarters of the planet. This fascinating book shows how the world's five oceans--Pacific, Atlantic, Indian, Southern, and Arctic--are interconnected and why they are vitally important to the rest of Earth. Concise text, easy-to-read maps, and dazzling full-color photographs provide kids with an overview of these unique biomes. Topics include

* the four zones that make up the marine biome

* the plants and animals that inhabit the zones in each ocean

* the unique features of each ocean, such as coral reefs

* oceans in danger and how to conserve oceans