Dolphins skim their way along the water's surface, plankton drift along with the currents, and an underwater volcano erupts. This is the ocean biome. Through a simple narrative and vivid photographs, readers will learn about the landscape of the ocean, the plants and animals that live there, what causes tides and waves, and the challenge we all face in keeping the world's oceans safe and clean. A follow-up activity encourages students to research the similarities and differences between the fish and mammals that live in the largest biome on the planet.