This is much larger than its southern cousin the Floridian black bear ( Ursus americanus floridanus) which weighs 300 pounds on average. For example, a male polar bear ( Ursus maritimus) typically weighs between 770 and 1,540 pounds. Bergmann’s Rule states that animal species in colder climates will be larger than related species in warmer climates. In the animal kingdom, different evolutionary trends relate body size to ecology. The average atmospheric temperature in the winter is between -22 and -31-degrees Fahrenheit (-30 to -35-degrees Celsius). The temperature in the Arctic circle is influenced primarily by the surrounding sea water which is 28.8-degrees Fahrenheit (-2-degrees Celsius) before it freezes. ![]() Polar bears inhabit the arctic circle including territories of Canada, Greenland, Norway, Russia, and the United States in parts of Alaska. What other surprising information is there on polar bears? We’ll find out in this article as we explore the world’s largest polar bear ever recorded! Why are polar bears so large? A polar bear is insulated by fur and fatty tissue This is similar to how snow appears white despite having no pigment. In polar bears, the guard hairs are translucent and appear white because of how they reflect light. The outer layer of fur is called guard hair. Interestingly, a polar bear’s famous white fur has no white pigment. Polar bears are not only the largest bears in the world, but they are also the largest carnivores on land! These magnificent creatures are admired for their beautiful white coats and their particularly adorable little cubs.
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