Discover the watery world that covers two-thirds of the globe and find out why oceans are so important to life on Earth. Meet jet-propelled octopuses and hermit crabs, look closely at seaweed, find out how waves form, and discover the submarines and submersibles that have explored shipwrecks and the deepest trenches.Learn about prehistoric oceans and find out how people are trying to protect the oceans of the future. Eyewitness Ocean uses striking full-colour photographs, including sequences of animal behaviour, and diagrams of how oceans work, and maps along with amazing facts, infographics, statistics, and timelines to reveal the many aspects of this marine biome. Part of DK's best-selling Eyewitness series, which is now getting an exciting makeover, this popular title has been reinvigorated for the next generation of information-seekers and stay-at-home explorers, with a fresh new look, new photographs, updated information, and a new "eyewitness" feature - fascinating first-hand accounts from experts in the field.