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Polar bears can smell seals several meters beneath the ice. Does their nose have any special structure?

Polar bears have very sensitive noses, and seals are their delicacies, but they also eat other fish. The main food of polar bears is seals, most of which are ringed seals. When food is not very scarce or when polar bears are extremely hungry, they usually only eat the fat of seals and ignore the remaining lean meat, leaving it to foxes and sea turtles. Birds eat, they are the richest people in the animal world. It seems like a waste, but in fact it is a necessity for survival.

The polar bear (Latin scientific name: Ursus maritimus) is the largest terrestrial carnivore in the world. It is also known as the white bear and is very naive. The skin is black and the hair is transparent so it usually looks white, but also has yellow and other colors. It is huge and ferocious.

Polar bears’ vision and hearing are equivalent to humans, but their sense of smell is extremely sensitive, seven times that of dogs. Their fastest speed when running can reach 60km/h, which is 1.5 times that of the world’s 100-meter champion. Due to the rise in global temperatures, the ice floes in the Arctic have gradually begun to melt. The former home of polar bears has been damaged to a certain extent. They are likely to become extinct in the near future and require human protection.

Polar bears only eat seal fat. The calories contained in fat are by no means comparable to lean meat. The thick fat of seals can ensure the caloric supply of polar bears and directly convert it into their own fat for storage. After all, in spring The polar bear needs to quickly regain the weight lost during hibernation to keep warm and cold. There is no sea ice in summer, so it can only starve most of the time. It also needs this layer of fat to survive, and in autumn it needs to store the heat during hibernation. Therefore, the fat layer For polar bears, the thickness is a matter of life and death.

Fat is easy to digest and does not require energy consumption. On the contrary, lean meat is more difficult to digest and requires the use of precious energy reserves. Obviously, this is not a wise move for polar bears.

Polar bears are animals that do not need to drink water throughout their lives. The water they need is obtained from fat. Eating lean meat not only does not get water, but also consumes precious water in the body. After eating lean meat, lions and tigers Meat will find a small river to drink water. This is the reason. Polar bears will not do this kind of thing.

Natural selection means survival of the fittest. Only animals that can adapt to the environment are strong, and polar bears are undoubtedly one of them.

Polar bears generally have two hunting modes, the most commonly used is the "wait and wait" method. They will find the seal's breathing hole on the ice in advance, and then wait there with great endurance for several hours. As soon as the seal emerges, they will launch a sudden attack and use their sharp claws to drag the seal up from its breathing hole. If the seals are on shore, they will hide out of sight and then creep over to attack. Another mode is to dive directly under the ice and wait until the seals are close to the shore to launch an attack. This has the advantage of directly cutting off the seals' retreat route.