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Children's LiteratureAlthough the moon was only visited by men for a handful of days over thirty years ago, more is known about the surface of the moon than the oceans on Earth. Oceans cover more than 70% of the Earth's surface. While there are several differently named oceans, they are interconnected and considered by some scientists to be just one large ocean. The ocean floor contains the highest mountains and the deepest trenches on Earth. Life forms are diverse and unique depending on the area and depth of the ocean. While they can be fascinating and exciting to visit and explore, they can also be dangerous and deadly. Each page deals with a particular aspect of the ocean: ocean currents and how tides work; useful information about both the most basic and the most fascinating ocean creatures; different occupations that work on or in the ocean; and information on how the oceans have shaped life on Earth. Each section contains an activity that helps students better understand the information presented. This text is suitable for use in a classroom and is part of the "Our Planet Earth" series. 2004, Gareth Stevens Publishing, Ages 7 to 12.