Find out what causes devastating tsunamis and hurricanes. Explore ancient shipwrecks and encounter extraordinary marine life. Descend into the vast, hidden depths of Earths oceans and discover an amazing world in this stunning visual encyclopedia. Full of astonishing facts, eye-opening explanations, and superb images, Ocean: A Childrens Encyclopedia is the ultimate guide to a world unlike any other. Learn about underwater volcanoes, magical coral reefs, and intrepid ocean explorers.