Juist is an island and municipality in the district of Aurich in Lower Saxony in Germany. The island is one of seven inhabited East Frisian Islands at the edge of the Lower Saxon Wadden Sea in the southern North Sea. It is located between Borkum Island (west), Memmert Island (southwest) and Norderney (east). The island is 17 km (11 mi) long and from 500 metres (1,600 ft) to 1 kilometre (0.62 mi) wide, depending on the tide levels. There are two villages on the island: the main village Juist, and Loog. The island is separated from Norderney by the Norderneyer Seegatt.