MONSTERS The sea serpent of the Norwegian Sea; grab the unwary sailors from the decks of ships. Woodcut from "Historia de Gentibus Septentrionalibus" (1555); the Bishop of Uppsala; Olaus Magnus (1490-1557). The work in 22 volumes had the intent to disclose customs; stories and legends of the Swedish populations. The extensive and detailed description of the environment and culture of the Nordic could not leave out the sea monsters that; according to the beliefs of the time; roamed the seas of the north. Sixteenth century.