Storsjöodjuret, or the “Great-Lake Monster”,is reported to live in the 300-foot-deep lake Storsjön in Jämtland, Sweden. The only one of its kind in Sweden, it had its first sighting in 1635.
Storsjöodjuret is described as a serpentine or aquatic reptile with fins across its back and a doglike head. It is reported to measure approximately 20 feet long, and some accounts describe it as having several humps. There have been over 200 recorded sightings of the serpent. In 1895 a group of men,sponsored in part by King Oscar II, attempted to capture it, even constructing a huge trap. Their venture was unsuccessful,but the trapping device can still be seen in the county museum.
n 1986, the Jämtland county administrative board declared the Storsjöodjuret to be an endangered species and granted it protected status. However, it was removed from the list in November 2005.