Ages 7 to 14 years. Oceans and seas form the marine biome, which is the world's largest biome. It covers three-quarters of the Earth's surface and reaches from the far north to the far south of the planet. The diverse and complex concepts and relationships of the marine biome are made accessible to young readers in The Ocean Biome. Full-colour illustrations, dazzling photography, and easy-to-understand text explain: the four zones that make up the marine biome; the plants and animals that inhabit each of the zones in an ocean; the diversity and importance of coral reefs and estuaries; the importance of oceans to the rest of the Earth; oceans in danger and how to conserve oceans.