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The obvious answer is white. It certainly looks white, and for all intents and purposes, polar bear fur is white. But perhaps you've noticed that sometimes a polar bear looks yellow, gray, or green. Why is that? Do some polar bears have different color coats? Does the coat color of a polar bear change with the environment?
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1. Why do polar bears have white fur? Polar bears have white fur so that they can camouflage into their environment. Their coat is so well camouflaged in Arctic environments that it can sometimes pass as a snow drift. Interestingly, the polar bear's coat has no white pigment; in fact, a polar bear's skin is black and its hairs are hollow.
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Bears Polar Bears Why Do Polar Bears Have White Fur and Dark Skin? Advertisement Polar bears are known for their white fur, but did you know they also have black skin? They have these features for a couple of very good reasons. Polar bears have white fur and dark skin to soak up as much radiant heat from the sun as they can.
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Thermoregulation Polar bears have black skin, not white like their fur. Their black skin can better absorb and retain heat from the sun. Black color absorbs more sunlight. This adaptation helps keep the bear warm in the cold Arctic environment. Moreover, the black skin is not visible under the fur, which enhances their stealth. 4. UV Protection
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Polar bears that are kept in captivity in more humid parts of the world can even get a green tinge to them, a result of algae growing inside the hollow hair—usually this can be relatively easily "cured" by soaking the bears repeatedly in saltwater.
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Every single strand of guard hair is transparent, meaning it has a hollow core with no colored pigments. The undercoat, which is a layer comprising thinner hair, is also colorless, but unlike guard hair, it isn't hollow.
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Yes! Most sources indicate that the long, coarse guard hairs, which protect the plush thick undercoat, are hollow and transparent. The thinner hairs of the undercoat are not hollow, but they, like the guard hairs, are colorless. Male polar bear near the Beaufort Sea, Alaska, 2016. Steven C. Amstrup, USGS photographer, USGS Science Explorer .
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Thick Padding of Fat In addition to 2 layers of fur, a thick layer of fat helps keep the bears warm. A polar bear's body fat can measure up to 11.4 cm (4.49 in). In the water, polar bears rely more on their fat than their fur to keep out the cold; wet fur is a poor insulator.
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Polar bear fur inspired the creation of a new knittable heat-trapping fiber. The Arctic's extreme cold is no match for a polar bear's super-insulating fur. Humans could one day benefit from a.
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43 Share 10K views 7 years ago If you ask any child what color is the polar bear fur, the answer will probably be white. But scientists after years of research have found that polar.
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After many types of research, scientists have concluded that a polar bear's fur is transparent. Though the fur appears to be white, it still does not have any white pigment. So, why does it look white? There are a lot of external factors that give their fur a white appearance.
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Polar bears aren't actually white.Turns out, they can come in all sorts of colors: yellow, gray, orange, and even green. That's because polar bear fur is transparent and hollow.When light strikes.
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Polar bear hair shafts are actually hollow, which allows the fur to reflect back the light of the sun. Much like ice, this reflection is what allows these bears to appear white or even yellow at times. It's also thought that the transparency of their thick coats is designed to allow better heat absorption from the sun into their black skin.
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Polar bears have a thick layer of fur that helps them survive in the cold Arctic environment. The fur is made up of two layers, an outer layer of long, transparent guard hairs and an inner layer of short, dense underfur. The guard hairs are hollow and reflect light, which gives the polar bear its white appearance.
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Transparent Fur and Black Skin: The Fascinating Phenomenon of Polar Bears Facts in Action 537 subscribers Subscribe 5.6K views 2 months ago Discover the intriguing secret behind the.
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Polar Bears Have Clear Hair, So Why Do They Look White? - Earth Rangers Flickr Credit: mape_s What Makes Up Polar Bear Fur? A Polar bear's coat has two layers of hair: an outer layer, made up of long (5-15cm) guard hairs; and a thick undercoat, made up of shorter hair.
