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Polar bears are apex predators (AI generated image)
As apex predators, polar bears are vital to the Arctic ecosystem, yet they face critical threats from climate change and habitat loss. Besides maintaining the delicate balance of the northern marine environment, these mammals are also known for their distinctive grooming habits, which are essential to their survival. It’s true, you’ll barely find a full-functioning adult polar bear roaming around dirty and matted. They like to keep themselves spotless, clean and dry — mainly because wet, soiled fur doesn’t insulate as well as a clean layer does.
In fact, polar bears do not actually have white fur. No, we aren’t kidding. These fluffy mammals, which survive in the icy Arctic, are actually born with black skin. Their fur is hollow and transparent, with no white pigment coating the shaft. However, they have a double coat of fur for protection, along with a thick layer of body fat. The external layer of fur, made of keratin, has light-reflecting properties.
When the sun hits a polar bear‘s fur, light rays are trapped inside, creating a luminescent effect that gives it an off-white shade. The colour helps polar bears camouflage with the Arctic surroundings and icy environment. The body fat layer keeps them warm when swimming in chilly water and helps insulate them from snowy blizzards and rough weather.
Polar bears belong to the top of the food chain. (Source: Freepik)
Here are some cool facts about these burly creatures:
A carnivorous member of the bear family, Polar bears feed on fatty seals for fat and energy to survive in harsh weather conditions. Their stomachs have a large food storage capacity and high protein and fat absorption.
Polar bears are skilled swimmers, moving through water at speeds up to six miles an hour. They are often considered marine mammals because of their time spent on sea ice, waddling through the icy waters of the Arctic with their webbed front paws and hind legs.
Polar bears have interesting hunting methods. Their go-to trick is to stay still by a seal’s breathing hole, sometimes for hours or days, waiting for it to come up for air. Their slippery skin makes it difficult for bears to grip them. Thus, they can catch one or two out of the ten to fifteen seals they set their sights upon.
What makes these mammals important to the ecology? Polar bears belong to the top of the food chain and play an essential role in regulating marine environment and Arctic livelihood. With climate change threatening long-term damage to water bodies up north, they fall directly in the line of impact and require immediate intervention in the form of rehabilitation and restoration. Polar bears were listed as a threatened species in the US under the Endangered Species Act in May 2008.
Loss of habitat and the threat of climate change aside, bear-human conflicts, increasing human industry, oil spills, and overharvesting can force them to spend more time on land than on ice, which can indirectly threaten the workings of the food chain.