πŸ€‘ Polar Bear | National Geographic

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These great white bears are an icon of the Arctic, and many people feel a connection to polar bears, even if they've never seen one in person.


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Top 10 facts about polar bears | WWF
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Polar Bear | Facts, pictures, trips & more about Polar Bears
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Polar Bear, Polar Bear, What Do You Hear? [CC]

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The polar bear's fur lacks pigment, giving it the appearance of being white. Their skin, foot pads, and nose are black. Polar bears have smaller ears than other.


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Hungry Polar Bear Ambushes Seal - The Hunt - BBC Earth

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The mainstay of the polar bear's diet is bearded and ringed seals. Not particularly swift of foot, polar bears instead rely on stealth to sneak up on their prey.


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Wild Polar Bear - Predator of Arctic Ocean - Ice Bears (2018 Documentary)

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Polar bears are classified as marine mammals because they spend most of their lives on the sea ice of the Arctic Ocean. They have a thick layer of body fat and.


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Wolf Pack Takes on a Polar Bear - Ep. 1 - Wildlife: The Big Freeze

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The polar bear (Ursus maritimus) is a hypercarnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean.


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Polar Bears 101 - Nat Geo Wild

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Even though polar bears look white, their hair is really made of clear, hollow tubes filled with air. Scarring or residue on the fur can cause the β€œwhite” fur to appear.


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Polar Bear Stands Her Ground to Feed Her Cubs - Life - BBC Earth

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A polar bear outside Churchill, Manitoba, which is located on the animals' annual migration route. Tim Auer/ Polar Bears International.


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Nora the polar bear cub growing up

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Polar bears are classified as marine mammals because they spend most of their lives on the sea ice of the Arctic Ocean. They have a thick layer of body fat and.


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Wild Polar Bear Tries To Break In - BBC Earth

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A polar bear outside Churchill, Manitoba, which is located on the animals' annual migration route. Tim Auer/ Polar Bears International.


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Adorably Cute Polar Bear Cubs Go Sledging!

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Majestic creature of the far north, the polar bear is the world's largest terrestrial carnivore. Its Latin name, Ursus maritimus, means 'sea bear': an apt name for this​.


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The Life of a Baby Polar Bear - Ep. 4 - Wildlife: The Big Freeze

A widespread legend tells that polar bears cover their black noses with their paws when hunting. Courtship and mating take place on the sea ice in April and May, when polar bears congregate in the best seal hunting areas. When walking, the polar bear tends to have a lumbering gait and maintains an average speed of around 5. Polar bears have been observed to hunt the small Svalbard reindeer R. A polar bear may charge a group of walruses, with the goal of separating a young, infirm, or injured walrus from the pod. These alternatives may reduce the rate of weight loss of bears when on land. They may also eat plants, including berries , roots , and kelp ; [] however, none of these have been a significant part of their diet, [99] except for beachcast marine mammal carcasses. For decades, large-scale hunting raised international concern for the future of the species, but populations rebounded after controls and quotas began to take effect. There are 19 generally recognized, discrete subpopulations, though polar bears are thought to exist only in low densities in the area of the Arctic Basin. Since an attack on a walrus tends to be an extremely protracted and exhausting venture, bears have been known to back down from the attack after making the initial injury to the walrus. After mating, the fertilized egg remains in a suspended state until August or September.{/INSERTKEYS}{/PARAGRAPH} The polar bear Ursus maritimus is a hypercarnivorous bear whose native range lies largely within the Arctic Circle , encompassing the Arctic Ocean , its surrounding seas and surrounding land masses. With the exception of pregnant females, polar bears are active year-round, although they have a vestigial hibernation induction trigger in their blood. The only other bear similar in size to the polar bear is the Kodiak bear , which is a subspecies of brown bear. Although seal predation is the primary and an indispensable way of life for most polar bears, when alternatives are present they are quite flexible. Ringed seals are born weighing 5. Scientists have responded by noting that hungry bears may be congregating around human settlements, leading to the illusion that populations are higher than they actually are. The polar bear's most common hunting method is called still-hunting : [91] the bear uses its excellent sense of smell to locate a seal breathing hole, and crouches nearby in silence for a seal to appear. Like the brown bear, most ungulate prey of polar bears is likely to be young, sickly or injured specimens rather than healthy adults. Seals migrate in response to these changes, and polar bears must follow their prey. In Nunavut , some Inuit have reported increases in bear sightings around human settlements in recent years, leading to a belief that populations are increasing. Polar bears are the largest land carnivores currently in existence, rivaled only by the Kodiak bear. Due to the absence of human development in its remote habitat, it retains more of its original range than any other extant carnivore. When the polar bear was originally documented, two subspecies were identified: the American polar bear Ursus maritimus maritimus by Constantine J. The evidence from DNA analysis is more complex. In their southern range, especially near Hudson Bay and James Bay , Canadian polar bears endure all summer without sea ice to hunt from. Annual ice contains areas of water that appear and disappear throughout the year as the weather changes. The white coat usually yellows with age. The cheek teeth are smaller and more jagged than in the brown bear, and the canines are larger and sharper. They were also diving to feed on blue mussels and other underwater food sources like the green sea urchin. According to Hoshino, the bear started running but Hoshino made it to his truck. Modern methods of tracking polar bear populations have been implemented only since the mids, and are expensive to perform consistently over a large area. After feeding, polar bears wash themselves with water or snow. Mature bears tend to eat only the calorie-rich skin and blubber of the seal, which are highly digestible, [92] whereas younger bears consume the protein-rich red meat. Although polar bears are extraordinarily powerful, its primary prey species, the ringed seal, is much smaller than itself, and many of the seals hunted are pups rather than adults. Most brown bears have about 2 percent genetic material from polar bears, but one population, the ABC Islands bears , has between 5 percent and 10 percent polar bear genes, indicating more frequent and recent mating. When the seal exhales, the bear smells its breath, reaches into the hole with a forepaw, and drags it out onto the ice. Unlike brown bears, polar bears are not territorial. Polar bears are stealth hunters, and the victim is often unaware of the bear's presence until the attack is underway. Among young males in particular, play-fighting may be a means of practicing for serious competition during mating seasons later in life. Research of injury patterns in polar bear forelimbs found injuries to the right forelimb to be more frequent than those to the left, suggesting, perhaps, right-handedness. The 42 teeth of a polar bear reflect its highly carnivorous diet. Their southernmost range is near the boundary between the subarctic and humid continental climate zones. In general, adult polar bears live solitary lives. The polar bear kills the seal by biting its head to crush its skull. Whereas brown bears often maul a person and then leave, polar bear attacks are more likely to be predatory and are almost always fatal. Yet, they have often been seen playing together for hours at a time and even sleeping in an embrace, [78] and polar bear zoologist Nikita Ovsianikov has described adult males as having "well-developed friendships. Although stereotyped as being voraciously aggressive, they are normally cautious in confrontations, and often choose to escape rather than fight. Historically, the polar bear has also been known as the "white bear". Females communicate with their young with moans and chuffs, and the distress calls of both cubs and subadults consists of bleats. In , a photographer near Churchill took a now widely circulated set of photographs of a polar bear playing with a Canadian Eskimo Dog Canis lupus familiaris a tenth of its size. Given the change in climate, with ice breaking up in areas such as the Hudson Bay earlier than it used to, polar bears are exploiting food resources such as snow geese and eggs, and plants such as lyme grass in increased quantities. Unlike brown and black bears, polar bears are capable of fasting for up to several months during late summer and early fall, when they cannot hunt for seals because the sea is unfrozen. The polar bear is an excellent swimmer and often will swim for days. Their scientific name means " maritime bear" and derives from this fact. Polar bears are able to produce water through the metabolism of fats found in seal blubber, [50] and are therefore found primarily along the perimeter of the polar ice pack , rather than in the Polar Basin close to the North Pole where the density of seals is low. The polar bear was previously considered to be in its own genus , Thalarctos. This kind of social interaction is uncommon; it is far more typical for polar bears to behave aggressively towards dogs. The male's ornamental foreleg hair is thought to attract females, serving a similar function to the lion's mane. They still manage to consume some seals, but they are food-deprived in summer as only marine mammal carcasses are an important alternative without sea ice, especially carcasses of the beluga whale. When kept in captivity in warm, humid conditions, the fur may turn a pale shade of green due to algae growing inside the guard hairs. Michio Hoshino , a Japanese wildlife photographer, was once pursued briefly by a hungry male polar bear in northern Alaska. Polar bears consume a wide variety of other wild foods, including muskox Ovibos moschatus , reindeer Rangifer tarandus , birds, eggs, rodents , crabs , other crustaceans and other polar bears. This specimen, when mounted, stood 3. It is difficult to estimate a global population of polar bears as much of the range has been poorly studied; however, biologists use a working estimate of about 20β€”25, or 22β€”31, polar bears worldwide. These areas, known as the "Arctic ring of life", have high biological productivity in comparison to the deep waters of the high Arctic. Because of their dependence on the sea ice, polar bears are classified as marine mammals. The polar bear has an extremely well developed sense of smell , being able to detect seals nearly 1. Its hearing is about as acute as that of a human, and its vision is also good at long distances. This behaviour, if it happens, is rare β€” although the story exists in the oral history of northern peoples and in accounts by early Arctic explorers , there is no record of an eyewitness account of the behaviour in recent decades. The bears then proceeded to cache the carcasses, which remained and were eaten during the ice-free summer and autumn. Being both curious animals and scavengers, [99] [] polar bears investigate and consume garbage where they come into contact with humans. The polar bear is found in the Arctic Circle and adjacent land masses as far south as Newfoundland. Yet, polar bears will very seldom attack full-grown adult walruses, with the largest male walrus probably invulnerable unless otherwise injured or incapacitated. Polar bears hunt their preferred food of seals from the edge of sea ice, often living off fat reserves when no sea ice is present. The whales are of similar size to the walrus and nearly as difficult for the bear to subdue. The bear was able to reach the truck and tore one of the doors off the truck before Hoshino was able to drive off. When stalking land animals, such as muskox , reindeer , [] and even willow ptarmigan Lagopus lagopus , polar bears appear to make use of vegetative cover and wind direction to bring them as close to their prey as possible before attacking. The bear may lie in wait for several hours. These five nations are the signatories of the International Agreement on the Conservation of Polar Bears , which mandates cooperation on research and conservation efforts throughout the polar bear's range. They will even attack adult walruses when their diving holes have frozen over or intercept them before they can get back to the diving hole in the ice. Constantine John Phipps was the first to describe the polar bear as a distinct species in The Inuit refer to the animal as nanook transliterated as nanuq in the Inupiat language. {PARAGRAPH}{INSERTKEYS}Ursus eogroenlandicus Ursus groenlandicus Ursus jenaensis Ursus labradorensis Ursus marinus Ursus polaris Ursus spitzbergensis Ursus ungavensis Thalarctos maritimus. The most accurate counts require flying a helicopter in the Arctic climate to find polar bears, shooting a tranquilizer dart at the bear to sedate it, and then tagging the bear. In some areas, the polar bear's diet is supplemented by walrus calves and by the carcasses of dead adult walruses or whales, whose blubber is readily devoured even when rotten. It is a large bear, approximately the same size as the omnivorous Kodiak bear Ursus arctos middendorffi. However, the two species have mated intermittently for all that time, most likely coming into contact with each other during warming periods, when polar bears were driven onto land and brown bears migrated northward. Of the 19 recognized polar bear subpopulations, one is in decline, two are increasing, seven are stable, and nine have insufficient data, as of The polar bear is a marine mammal because it spends many months of the year at sea. Subadults may also be forced to accept a half-eaten carcass if they kill a seal but cannot defend it from larger polar bears. Because of expected habitat loss caused by climate change , the polar bear is classified as a vulnerable species. Compared with its closest relative, the brown bear, the polar bear has a more elongated body build and a longer skull and nose. In Svalbard, polar bears were observed to kill white-beaked dolphins during spring, when the dolphins were trapped in the sea ice. In Hudson Bay , James Bay , and some other areas, the ice melts completely each summer an event often referred to as "ice-floe breakup" , forcing polar bears to go onto land and wait through the months until the next freeze-up. The dental formula is 3. The polar bear's claws are short and stocky compared to those of the brown bear, perhaps to serve the former's need to grip heavy prey and ice. Most polar bears elsewhere will never have access to these alternatives, except for the marine mammal carcasses that are important wherever they occur. The polar bear is the most carnivorous member of the bear family, and throughout most of its range, its diet primarily consists of ringed Pusa hispida and bearded seals Erignathus barbatus.