Hemskilen is a plant and wildlife preserve with a wetland area known for its unique vegetation and fauna.
It is located near the island Storøya on the Sandefjord-Larvik border in Vestfold County.
Hemskilen is, at 335 decares (83 acres), one of the largest preserves of its kind in the county.
It is also one of Vestfold's most important habitats for the grey heron, while raptors such as the sea hawk and Western marsh harrier can also regularly be observed at Hemskilen.
[2][3] The Pectoral sandpiper is one of the many rare bird species often observed at Hemskilen.