Korea Strait

The Korea Strait is a sea passage between the Korean Peninsula and Japan’s Tsushima and Kyushu islands, connecting the East China Sea with the Sea of Japan.

Tsushima Island: A Japanese island in the Korea Strait, between the Korean Peninsula and Kyushu. It divides the strait into western and eastern channels.
Kuroshio Current: A strong, warm western boundary current flowing northward along the western Pacific. Its waters feed the Tsushima Current through the Korea Strait.
Tsushima land bridge: A former land connection between the Korean Peninsula and Japan exposed during lower sea levels. Lower sea levels altered whether the strait was a barrier or a route.
Battle of Tsushima: The 1905 naval battle in which Japan defeated Russia’s Baltic Fleet near Tsushima Island. The strait’s position shaped the route and setting of this decisive engagement.
Tsushima Strait: The eastern channel of the Korea Strait, lying between Tsushima Island and Kyushu. It is the passage’s eastern half, linking the strait to the Sea of Japan.
Korea Strait bottom topography: The submarine channels, sills, and basins shaping depth and water exchange in the Korea Strait. Shallow sills and separated channels constrain the strait’s circulation.
Paleolithic Korea: The archaeological record of human societies in Korea during the Paleolithic. Stone-tool similarities across the strait inform debates about early movement.
Mongol invasions of Japan: Two attempted Mongol-led invasions of Japan in 1274 and 1281. The invasion fleets crossed the Korea Strait from the Korean Peninsula.
Busan: A major port city on South Korea’s southeastern coast. Its coastline marks the strait’s northern shore near the western channel.
Tidal current: A water flow that reverses or varies with the rise and fall of tides. Tidal exchanges add back-and-forth motion to the strait’s throughflow.

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