Polar bears

Polar bears spend most of their time at sea and they occasionally drifting to land on icebergs. The oldest reference to a polar bear encounter in Iceland is in the Book of Settlement (Landnámabók), where Ingimundr the Old came across a female bear and her two cubs at a lake now known as Húnavatn or Cub-Lake. He captured the animals alive and brought them to King Haraldr of Norway as a gift. This incident dates back to around 890.