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Polar Bears And Polar Bear

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Polar Bear
Introduction
Polar bears live in the Arctic Circle with temperatures that can be minus fifty degrees Celsius. Polar bears are considered marine mammals because they spend the majority of the life at sea, swimming for miles, but they are the only marine mammal that has limbs and also roams on ice and land. Male polar bears generally are twice the size of females, or sow’s. An ancestor of the grizzly bear, polar bears live in the Arctic Circle and spend majority of their time in the ocean hunting for seals. Seals being the meal of choice for polar bears they have adapted to the harsh climate and learned how to hunt seals (Willmer, 2004). The population size of polar bears is uncertain but Canada is responsible for two …show more content…

Along with being translucent the bears fur is also hollow, this helps the bear swim, also preventing the freezing water from touching the bears skin. The bears fur is also long, fine and densely packed insulating the bear further (Willmer, 2004). The polar bear have large feet and the soles are covered in fur, insulating the feet and also used as grip for walking on the ice and snow. The large feet surface area on their feet also serves as grip for walking long distances searching for food. They also have small ears which decrease risk of water getting in them. The small ears also reduce heat loss.
Diet
Polar bears are the most carnivorous of the bear family. Polar bears have large narrow heads allowing them to fit there heard in small spaces searching for food. They have a great sense of smell allowing them to sniff out predators form far away. They have the most sensitive nose of any mammal this allows them to smell a seal that is three feet under the snow, or thirty kilometers away. When they do find a seal den they jump and push all their body weight into the snow breakings free the seal from underneath the ice. This hunting tactic mastered by polar bears acts as a surprise attack, and the seal never knew what was coming. These bears incredible sense of smell allows them to pin point the exact spot where the seal’s den is under the ice, otherwise if the polar bear is wrong the hunt will not be successful. This method is so important because the

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