Polar Bear
14 Ocak 2018Kutup ayısı hakkında basit bir İngilizce’yle ilginç bilgiler veren bir yazı
Polar bear fur is made up of an inner layer of dense fur and an outer layer of “guard hairs”, which appear white but are actually transparent. The fur keeps them very warm. The skin is not white; it is black. Therefore, they can absorb sunlight efficiently. They are strong and can swim very well. Polar bears are similar in size to a normal bear but have a slimmer neck, longer legs and fur.
They are mostly carnivorous. They eat mostly seals and fish. When Polar bears hunt, they often wait at holes in the ice, where the seals come up to breathe. They can live off of one seal for many days, but it will make them hungry if they do.
Polar bears live alone. Polar bears are black with clear fur, so in daylight, they appear white; at night, they are invisible.
Young Polar bears stay with their mothers for 1–2 years, and they become mature when they are 5–6 years old. People think Polar bears can live up to 30 years in nature, but in captivity , they can live up to 45 years.
Polar bears live in countries in the Arctic Circle, including Alaska, United States, Canada, Russia, Greenland, which is part of Denmark, Norway.
At birth, a baby cub weighs less than 2 pounds (0.9 kilograms). The mother feeds the babies milk, which makes them grow fast, and after 10 weeks, the cubs weigh about 20 to 25 pounds (9.1 to 11.4 kilograms). Young polar bears wrestle in the snow to build their strength and skills. They practice using their strong paws, and they show off their big, sharp teeth.
Mother polar bears will do anything to protect their young. They can kill a predator with just one blow of their powerful front paws. Scientists have even seen a mother polar bear stand up and leap at a helicopter to keep it away from her cubs.
During the first year, the cubs begin to eat solid food but still nurse from their mother. They begin to learn to hunt and swim. But they cannot live on their own. By the time they are two years old, the cubs have grown into large bears. They leave their mother and find a territory of their own. They hunt and live alone. But they play with other bears they meet. Polar bears are ready to mate when they are five or six years old. They are adults by this time and weigh 330 to 660 pounds (150 to 300 kilograms).
Polar bears have 42 teeth.
The polar bear eats seals, fish and fruits. They can be up to 250 cm long and 160 cm tall and weigh up to 600kg.
When two polar bears meet, they have a special way of greeting each other. They circle around each other for a while. Then they come closer and touch noses.
The polar bear was the most dangerous animal to hunt. It was also greatly respected for its strength and spirit. The bear’s meat and fur help the Eskimo survive. The Eskimo gave thanks and respect in turn. After a hunt, they held a celebration that lasted for several days. Then, a polar bear dance was held. Finally, the bear’s skull was set on ice to release its spirit back into the Arctic.
A polar bear can crawl across ice too thin for a human to walk on. They spread out their legs and lay their bellies flat on the ice. Then they use their claws to slowly push themselves across the ice.
Polar bears mate in April or May. The cub is born in December, when the mother is hibernating. The cub stays in the den with the mother until March, then, they all come out. They eat immediately after hibernating. Sometimes, because of global warming, this is impossible and the cubs die before they have had a chance to live. The cub leaves its mother in 2-3 years.
The polar bear’s liver contains a lot of vitamin A. Eskimo people knew that eating the liver could cause sickness and death. Several groups of European polar explorers were seriously ill after eating livers. The symptoms included drowsiness, wanting to sleep, being irritable, headaches, and vomiting. After 24 hours, people’s skin began to peel off.