Some unexpected and interesting facts about polar bears that you may not have known before. 
Fact No.1. The polar bear is the most land-adapted sea animal.
Polar bears are very dependent on marine ecosystems. Their main source of food is seals and seals - mammals that can only be found on ocean ice. Therefore, bears spend at least half of their lives above the surface of the sea, wandering across ice fields and icebergs. 
They spend the second half at sea. The fur of clubfoot repels water, a solid layer of fat increases buoyancy, and powerful webbed paws allow them to swim quickly and for a long time. Some bears even attack their prey from the water, thereby cutting off its escape route! Well, in their free time from insidious strategies, they are able to swim up to 160 km at a time. 
Fact No.2. Polar bears are scavengers.
Yes I know. Literally a paragraph above, I wrote that bears mercilessly abuse seals. But they can't always do this. Young bears are too inexperienced to get close enough to seals. And even adult bears often avoid sea hares and walruses - these animals are too strong. Therefore, they have to survive on free, but slightly rotten meat. Fortunately, a perfect sense of smell allows one to smell remains from 5-6 kilometers away. 
In summer the situation is even more complicated. Most bears move to land during this period, and here they are not the best hunters. Do we remember that a bear is a marine mammal? Yes, the potapych is capable of destroying a lemming hole or catching a weakened reindeer, but in most cases it lives on carrion and fat reserves. 
Facts No3-4. Polar bears are not white.
That's right, two facts in one! Let's start with the lesser known: polar bears' fur is not white, but transparent. Their hairs are thin and hollow. Air cavities work as an additional layer of thermal insulation between the atmosphere and the animal’s body. In the process of moving from medium to medium, light is partially reflected and partially absorbed, which is why the bear appears white to us. And if light breaks through the fur, it will be absorbed by the black skin. Thanks to this mechanism, the bear effectively converts the sun's energy into heat without losing its camouflage. It turns out that polar bears have transparent skin and black skin! 
This is why polar bears in some zoos turn green. Algae grows in the cavities of hairs in warm climates!
Fact No5. A polar bear eats for 10 people.
Under normal conditions this is not entirely true. Our hero's daily caloric intake is approximately 6000-8000 kilocalories per day. When there is an abundance of food, the bear even turns into a gourmet: it eats only fat, leaving the rest of the carcass to be eaten by its less successful brothers. But when there are a couple of months left before the ice melts, the animal goes into intensive watch mode. And then 20,000 calories is not the limit for him. 
During the growing season, bears flock en masse to landfills. However, outside the dozhora they also willingly live there.
Fact No6. The polar bear can hibernate and sleepwalk.
During the same period of gluttony, females can fall into a short winter sleep for 2-2.5 months. The reason is extremely simple - children. During a long sleep, the mother spends much less energy, and her cubs quietly develop using resources from the fat layer of the parent.
Well, when the polar summer comes, the males will also hibernate. Only now they sleep on the move. The metabolic rate of animals decreases and approaches the metabolism of a sleeping brown bear. But, unlike his brother, the clubfoot continues to wander half asleep. After all, food won’t find itself! 
You've found a polar bear's den, and that's good. But the polar bear found you. And it's very bad.
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