Reveals how oceans are formed， how waves are created， and how coastlines come to exist， then delves deep beneath the surface to vibrantly bring to life the complex underwater environments filled with fascinating ecosystems.，Explores what oceans are， how oceans are formed， and the physical processes associated with them; describes their various landforms and ecosystems; and discusses their exploration and use by humans.Reveals how oceans are formed， how waves are created， and how coastlines come to exist， then delves deep beneath the surface to vibrantly bring to life the complex underwater environments filled with fascinating ecosystems.，Explores what oceans are， how oceans are formed， and the physical processes associated with them; describes their various landforms and ecosystems; and discusses their exploration and use by humans.
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