World Ocean

The World Ocean, world ocean, or global ocean is the interconnected system of the Earth's oceanic (or marine) waters, and comprises the bulk of the hydrosphere.The unity and continuity of the World Ocean, with relatively free interchange among its parts, is of fundamental importance to oceanography. Customarily, it is divided into a number of principal oceanic areas that are delimited by the continents and various oceanographic features: these divisions are the Atlantic Ocean, Arctic Ocean (sometimes considered a sea of the Atlantic), Indian Ocean, Pacific Ocean, and Southern Ocean (sometimes reckoned instead as just the southern portions of the Atlantic, Indian, and Pacific Oceans). In turn, oceanic waters are interspersed by many smaller seas and other bodies of water.
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