Vampire Monsters / Island of the Damned

Since time immemorial, Transylvania has been the home to vampire myths and legend. There are many in the area, however, who believe that true vampires come in the form of a strange but dangerous animal with massive fangs. Could vampires be based on a real but rare animal?In the Baltic Sea near Sweden, there is a small island named Bla Jungfrun. This tiny outcropping was once the place where people who were thought to be witches were executed. Perhaps the haunted souls of the innocent still haunt the area. That would certainly explain all the supernatural phenomena reported on the isle.