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Bellingshausen Sea,part of the S Pacific Ocean, W Antarctica, SW of Cape Horn between the Antarctic Peninsula and Amundsen Sea. The sea is named after Russian explorer Fabian Gottlieb von Bellingshausen, who circumnavigated Antarctica in 1819. Major islands in the sea include Alexander I, Peter I (both named by Bellingshausen), and Charcot islands.
the border sea of the Southern Ocean on the shores of Antarctica, between the Antarctic and Thurston peninsulas. Depth, from 410 to 4,470 m in the open sea. The shore is mountainous and bordered with shelf glaciers. The sea’s large islands are Peter I Island and Alexander I Land. The water temperature in the north is about 0° C; in the south, lower than - 1° C. In summer the salinity is approximately 33.5 parts per thousand. The currents move clockwise. The larger part of the sea’s surface is covered with floating sea ice and icebergs year-round; in the winter and spring months the entire surface of the sea is covered with ice. The sea was discovered by the Russian expedition of F. F. Bellingshausen and M. P. Lazarev in 1821.