Polar Bear

        Polar bears are such good swimmers that they were once thought to be marine animals. Polar bears spend most of their lives (about 66.6%) in a "stationary" state, such as sleeping, lying down to rest, or waiting for prey. The remaining 29.1% of the time is spent walking or swimming on land or ice, 1.2% of the time is spent attacking prey, and the rest of the time is basically spent enjoying delicious food. Sometimes the prey that polar bears have worked hard to catch will attract the attention of their own kind. Generally speaking, if they are unfortunate enough to face those huge guys, smaller polar bears will tend to slip away. However, a mother who is nursing her cubs will sometimes fight with the offending big male bears to protect her cubs or defend the hard-earned food for the family.

Polar bears have two hunting strategies. The main one uses static hunting. This involves finding the seal's breathing hole in the ice and then waiting for the seal to surface to kill. When a polar bear sees a seal coming out of the water to bask in the sun, it will use tracking techniques to get close and then try to catch it. One stalking technique is to crouch and hide out of sight while hunting seals that climb onto the ice. Another technique is to swim through any channels or cracks in the ice until it is close enough to capture the seal. Using this technique, the polar bear can actually dive under the ice and onto the surface through its breathing holes in order to corral the seal and cut off its escape route. Hunting usually takes place immediately after the prey is dragged out of the water. Polar bears devour the skin and fat first, and the rest is usually discarded. Other polar bears or arctic foxes then scavenge these leftovers. After feeding, polar bears will clean themselves by licking and rinsing their fur.

Humans and other polar bears are the only natural enemies and predators of polar bears. Male polar bears may prey on polar bear cubs if other males approach them. For this reason, females with cubs tend to avoid other polar bears.

Polar bears are currently the most powerful animals among terrestrial carnivores. Not to mention unarmed humans, even the Siberian tiger at the top of the food chain is inferior to polar bears. However, such a powerful polar bear is currently facing a survival crisis, the biggest factor of which is global warming. Global warming threatens all organisms in the world, not just a single organism, it is just a matter of sooner or later. Therefore, what we can do is to protect the environment, reduce greenhouse gas emissions, and slow down the rate of global warming, which is self-help.

Listed in the IUCN Red List of Threatened Species in 2016, ver3.1 - Vulnerable (VU)

Recently, I have frequently seen such a news on major domestic news platforms, saying that there was an unlucky albino brown bear abroad, which was found by people from an animal protection organization during hibernation. Then they mistakenly thought it was a polar bear traveling far away for food, so they rescued it and spent a lot of effort to send it back to the Arctic by helicopter. After entering the Arctic, the unlucky brown bear was not only shivering with cold, but also beaten by a real polar bear. Fortunately, it soon met the Arctic expedition team, and people recognized it as a brown bear, so they rescued it from the Arctic. I thought the matter was over, but soon the brown bear was found by the same animal protection organization again and sent to the Arctic again. Then it was lucky enough to meet experts in the Arctic and was rescued again. The experts were afraid that it would be mistaken for a polar bear again, so they dyed it. As time went by, new white hair gradually grew out, and people once again mistook it for a polar bear with dirty hair, so they sent it to the polar bear pavilion in the zoo for care. I don't know if this news is true or not, just treat it as a joke^_^

Polar bears are distributed circumpolarly in the ice-covered Arctic. They live mainly on the ice floes and islands in the Arctic Ocean and near the coastlines of adjacent continents (i.e., on the continental shelf waters or islands covered with ice and snow all year round). They generally do not go deeper into the north because the ice there is too thick and there is basically no food.

Polar bears have large and sturdy bodies, with shoulder heights up to 1.6 meters. Adult males weigh between 300-800 kilograms and can be up to 2.5 meters long from nose to tail. Females are smaller, weighing 150-300 kilograms and 1.8-2 meters long. Similar to brown bears, except without shoulder humps. The head is relatively smaller than that of other bears, with small and round ears and a slender neck. The skin is black, and the original appearance of the skin can be seen from the black skin around the nose, paw pads, lips and eyes of polar bears. The black skin helps absorb heat, which is a good way to keep warm. Polar bears have five toes on each foot, and the claws are not retractable. The front paws are large and paddle-shaped, suitable for swimming and walking on thin ice. The hind legs are not used when swimming. The palms are hairy, and the soles of the hind and front feet have fur for insulation and traction. Females have four functional breasts.
Polar bears have colorless,