Inside Science is an editorially independent news service of the American Institute of Physics, About Inside Science | Contact Us | Privacy Policy | Reprint Rights. When a seal does come to the surface, the bear bites the seal on the head and neck, flips it onto the ice with its claws, and drags it from the water. They also have two thick layers of fur layers of fat, and black reflective skin, that combined help to trap heat into the bears body. Polar bears primarily stay warm due to their fur and a thick layer of blubber. Polar bears weigh about 500 to 1,700 pounds, and they live the cold Arctic in parts of Alaska, Canada, Denmark/Greenland, Norway, and Russia. Credit: U.S. Rabbits There are eight species of bears, Asiatic, brown, black, panda, polar, sloth, ant-eating bear, sun bear, and Andean bear. Read more: How do polar bears stay warm? New Research Reveals How Polar Bears Stay Warm, from Inside Science. They reflect light and keep heat in. How do Polar Bears Stay Warm Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Media credits Alan D. Wilson Creature Friday, February 7, 2014 Cat Ferguson, Contributor WebA polar bear might catch only one or two out of 10 seals it hunts, depending on the time of year and other variables. Five of the nine bears in the study lost body mass, meaning they weren't catching enough fat-rich marine mammal prey to meet their energy demands. Thanks for reading Scientific American. "This was at the start of the period from April through July when polar bears catch most of their prey and put on most of the body fat they need to sustain them throughout the year," Pagano said. In a new study, a team led by the University at Buffalo reports that genes controlling nitric oxide production in the polar bear genome contain genetic differences from comparable genes in brown and black bears. Polar bears can withstand temperatures as low as -50 Fahrenheit (-45 Celcius). The undercoat is shorter but denser. , Charlotte Lindqvist, assistant professor of biological sciences, Downloadable photo of a male polar bear walking on pack ice, Downloadable high resolution of a polar bear in Alaska, Downloadable photo of a polar bear at rest, Downloadable portrait of Charlotte Lindqvist, Polar Bears Exhibit Genome-Wide Signatures of Bioenergetic Adaptation to Life in the Arctic Environment, Proceedings of the National Academy of Sciences, How do polar bears stay warm?
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