The Sea of Japan is a sea in the north-western edge of the Pacific Ocean. It is separated from the ocean by the Japanese Archipelago, including Sakhalin, Hokkaidō and Honshū. It is surrounded by these islands and the Eurasian Continent. It covers 978,000 square km. The average depth is 1,667 meters. The depth of the deepest point is 3,742 meters. Five (or Six) narrow channels of water link the Sea of Japan and other seas: the Strait of Tartary and La Pérouse Strait with the Sea of Okhotsk; the Tsugaru Strait with the Pacific Ocean; the Kanmon Straits with the Seto Inland Sea; the Busan and Tsushima Strait with the East China Sea. 