Koos (island)

Koos is the largest of several small islands in the Bay of Greifswald, Mecklenburg-Vorpommern, Germany. It has an area of 772 hectares and a maximum elevation of just above three meters. The island is a largely uninhabited natural reserve with restricted access. It is separated from the mainland by "Kooser Bucht" and "Kooser See", two bays connected by a tiny strait, "Beek".
In 1241, Barnuta, prince of Rügen, granted Koos (then ""Chosten") to Eldena abbey (then "Hilda""), later it became a possession of the Hanseatic town of Greifswald, located a few kilometers southward. A medieval burgh has been suggested on the isle, but not verified. A 17th-century Dutch settlement had disappeared in the 18th century. Koos is administered by the nearby town of Greifswald.