The Bering (or Imarpik) Sea is a body of water in the extreme north of the Pacific Ocean, separated from the main body of the Pacific by the Alaska Peninsula and Aleutian Islands. Covering over two million square kilometers (775,000 sq. miles), it is bordered on the east and northeast by Alaska, on the west by Russia's Siberia and Kamchatka Peninsula, on the south by the Alaska Peninsula and the Aleutian Islands and on the far north by the Bering Strait which separates the Bering Sea from the Arctic Ocean's Chukchi Sea. It is named for the first European discoverer to sail its waters, the Danish navigator Vitus Bering.