![]() This map, used as the primary image in Wikipedia's Ocean article, shows that there is not a worldwide agreement on the boundaries between the world's oceans. Its boundaries are defined by a line from Norway to Svalbard, Svalbard to Iceland, and Iceland to Greenland another from Greenland to Baffin Island ( Nunavut, Canada) and Baffin Island to Quebec (Canada) and a final line between Alaska and Russia. The Arctic Ocean's southern boundaries on this map differ from the map above prepared by NOAA. The Indian-Pacific boundary also has lines passing through the Indonesian archipelago. The boundaries between the Atlantic and Pacific Oceans, and the Atlantic and Indian Oceans, and the Indian and Pacific Oceans are each shown as a longitude line between the southernmost point of a continent (South America, Africa, and Australia, respectively) and the northern boundary of the Southern Ocean. The northern boundary of the Southern Ocean is shown at 60 degrees south latitude. It is drawn on a base map of the world with latitude and longitude reference lines. This map shows different boundaries of the world's oceans. The base map is a latitude / longitude grid by NOAA. The southern limit of the Arctic Ocean was set at three lines: 1) across the opening of the Bering Strait 2) the 60-degree north latitude line across the Davis Strait between northern Labrador and southern Greenland 3) a line across the Denmark Strait between Greenland and Iceland and a line across the Norwegian Sea between Iceland and Norway. They used longitude lines extending north from 60 degrees south latitude to the southernmost points of South America, Africa, and Australia as the dividing lines between: the South Pacific and South Atlantic the South Atlantic and the Indian Ocean and the Indian Ocean and the South Pacific. They set the boundary between the North Atlantic and South Atlantic at the equator, the boundary between the North Pacific and South Pacific at the equator and the northern boundary of the Southern Ocean at 60 degrees south latitude. NOAA created the world map above to show the boundaries of the five major oceans.
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