Shōnan (湘南) is the name of a region along the coast of Sagami Bay in Kanagawa Prefecture, central Japan. Centered on Sagami River, about 60 kilometers southwest of Tokyo, the Shōnan region stretches from Ninomiya in the west to Fujisawa in the east, including Ōiso, Hiratsuka, and Chigasaki. Because of the bay, the region benefits from a mild climate and long beaches covered with dark volcanic sand.
Sagami Bay (相模湾, Sagami-wan; also known as the Sagami Gulf or Sagami Sea) lies south of Kanagawa Prefecture in Honshu, central Japan, contained within the scope of the Miura Peninsula, in Kanagawa, to the east, the Izu Peninsula, in Shizuoka Prefecture, to the west, and the Shōnan coastline to the north, while the island of Izu Ōshima marks the southern extent of the bay. It lies approximately 40 kilometres (25 mi) southwest of the capital, Tokyo. Cities on the bay include Odawara, Chigasaki, Fujisawa, Hiratsuka, Itō, and Kamakura.
Enoshima (江の島) is a small offshore island, about 4 km (2.5 mi) in circumference, at the mouth of the Katase River which flows into the Sagami Bay of Kanagawa Prefecture, Japan. Administratively, Enoshima is part of the mainland city of Fujisawa, and is linked to the Katase section of that city by a 389-metre-long (1,276 ft) bridge. Home to some of the closest sandy beaches to Tokyo and Yokohama, the island and adjacent coastline are the hub of a local resort area.