Amrum is one of the North Frisian Islands on the German North Sea coast, south of Sylt and west of Föhr. It is part of the Nordfriesland district in the federal state of Schleswig-Holstein and has approximately 2,300 inhabitants. The island is made up of a sandy core of geestland and features an extended beach all along its west coast, facing the open North Sea. The east coast borders to mudflats of the Wadden Sea.