Arctic Ocean over the Arctic Ocean (see Polar route). The Arctic Ocean occupies a roughly circular basin and covers an area of about , almost the size of Antarctica. The coastline is long. It is surrounded by the land masses of Eurasia, North America, Greenland, and by several islands. It is generally taken to include Baffin Bay, Barents Sea, Beaufort Sea, Chukchi Sea, East Siberian Sea, Greenland Sea, Hudson Bay, Hudson Strait, Kara Sea, Laptev Sea, White Sea and other tributary bodies of water. It is connected to the Pacific Ocean by the Bering Strait and to the Atlantic Ocean through the
Kara Sea Port and Dikson and it is important as a fishing ground although the sea is ice-bound for all but two months of the year. Significant discoveries of petroleum and natural gas, the East-Prinovozemelsky field, an extension of the West Siberian Oil Basin, have been made but have not yet been developed. In 2014, US government sanctions resulted in Exxon having until September 26 to discontinue its operations in the Kara Sea. The International Hydrographic Organization defines the limits of the Kara Sea as follows: There are many islands and island groups in the Kara Sea. Unlike the other marginal seas