Wandering Polar Bear, Ursus maritimus, in the Hudson Bay

Polar Bear, Ursus maritimus, in the Hudson Bay, The Inuit call him Nanook and say that it has supernatural powers. It is a big, muscular bear with a weight of 300 to 600 kilograms and a total length of up to 3.5 meters. The biggest known Polar Bear had a weight of 1,002 kilograms and a length of 3.65 meters. Its fur is white to yellowish and can convert 95 percent of the ultraviolet radiation into heat. Every single hair is transparent and hollow, to capture the light from any direction. The fur insulates optimally and gives almost no heat off to the outside. Polar Bear eat mainly of meat, but also of seaweed, crabs, sea birds, bird eggs, berries, carrion. They are excellent swimmers and are seen several hundred kilometers far into open sea. It is also a good diver and is able to stay under water for up to two minutes. (Photo by: Education Images/Universal Images Group via Getty Images)