The Haneji Inland Sea is surrounded by Yagaji Island, Kouri Island and other small islands. The Haneji Inland Sea is sometimes referred to as a small version of the Japanese Inland Sea, that scenic waterway between the main islands of Japan. The Haneji Inland Sea is located between the eastern side of Motobu Peninsula and the main body of Okinawa. The view from Mount Arashi on the peninsular side of the inland sea is a spectacular one whose vista covers Kouri and Yagaji Islands and a number of uninhabited islets. On these small bodies of land Ryukyu Pine Trees, azaleas and lilies grow undisturbed.
Spring is a good time for motorists and cyclists to enjoy peaceful and natural scenes.
The Haneji Inland Sea is usually calm, so boating and fishing are popular. Plenty of kisu, a type of small fish, can be taken by fishermen. During the typhoon season, many ships gather in the waters to take harbor against the strong winds. Almost at the tip of Motobu Peninsula on the western side of the inland sea is the port of Unten. The story of how it got its name is derived from the mighty samurai Minamoto no Tametomo.