Shimono-shima
Shimojima is the southern end of Tsushima Island, which lies in the Korea Strait between the East [China Sea] to the south and the Sea of Japan to the north, and Korea to the west and mainland Japan to the east.
Shimojima is the southern end of Tsushima Island, which lies in the Korea Strait between the East [China Sea] to the south and the Sea of Japan to the north, and Korea to the west and mainland Japan to the east.