Earth's oceans cover 70 per cent of its surface, and in this book, you will find all you need to know about how they were formed and what they contain, the special characteristics of ocean wildlife both in shallow, sunlit water and in the dark depths, the effects of ocean currents, and how people use and abuse ocean resources. 'Location files' are mini case studies that focus on places with a particular feature; 'People files' give potted biographies of famous explorers or discoverers; 'Fact Files' list amazing facts. This book is packed with information, facts and figures, and examples from all around the globe. Clear maps and diagrams extend the expertly-written text.