Ariake Sea
The ', which is also called the ', is a shallow semi-enclosed inland sea separating the island of Kyūshū from the Amakusa Islands. It lies mostly within Kumamoto Prefecture and at the southern end of the sea it also borders Kagoshima Prefecture. To the north is the Ariake Sea; to the south, the East China Sea. Cities of note that lie on the Yatsushiro Sea include Yatsushiro itself and Minamata.