

Polar Bear
Ursus maritimus
🐻
Chordata
Mammalia
Carnivora
Caniformia
Ursidae
Ursus
Ursus maritimus
The Arctic Apex Predator — The Polar Bear is the largest extant bear species and the top predator of the Arctic ecosystem. It is highly adapted to life on sea ice, where it hunts seals for their high fat blubber.
Description
Polar Bear (Ursus maritimus) — The Polar Bear is a marine mammal that evolved from brown bear ancestors roughly 400,000 years ago. It is the largest terrestrial carnivore alive today. Its thick white fur and a layer of fat up to 11 cm thick insulate it against freezing temperatures. It relies on sea ice to hunt seals, primarily ringed and bearded seals, using a method called still-hunting — waiting by a seal’s breathing hole to ambush it. Polar Bears are strong swimmers, capable of covering over 60 km in open water. However, due to rapid Arctic ice loss, they are increasingly forced to travel greater distances for food, making them highly vulnerable to climate change. The polar bear’s diet is one of the most extreme examples of lipid specialization in any terrestrial mammal. Their macronutrient intake is dominated by fat, reflecting both their prey’s composition (mostly seals) and their cold marine habitat.
Quick Facts
Max Mass
Shoulder Height
Standing Height
Length
Diet
Trophic Level
390
1.6
2.4
2.5
kg
m
m
m
Carnivore - Ambush Hunter, Hypercarnivore (70%+ meat), Obligate Carnivore (100% meat), Carnivore - Lipivore
Facultative Lipivore
Hunt History
Indigenous Arctic peoples such as the Inuit, Chukchi, and Sami have hunted Polar Bears for millennia. They used bear meat for food, fur for clothing, and fat for oil and fuel. Hunts were carried out using spears, bows, and later firearms, but were highly ritualized — many Arctic cultures viewed the Polar Bear as a spiritual equal or ancestor.
Earliest Archaeological Evidence of Human Predation:
Zhokhov Island (Siberian Arctic, ~8,000 years ago): Remains of Polar Bears with butchery marks found alongside early Arctic hunting tools.
Point Hope, Alaska (~4,000 years ago): Thule and Paleo-Eskimo sites showing Polar Bear skulls used in ceremonial contexts, with clear evidence of hunting.
Greenlandic Dorset Culture sites (~2,500 years ago): Polar Bear bones found with stone tools, suggesting organized hunting practices.
Time & Range
Extinction Status
Regionally Extinct
Extinction Date
Temporal Range
Region
10000
BP
Late Pleistocene
Arctic
Wiki Link
Fat Analysis
Fatness Profile:
High
Fat %
10
Est. Renderable Fat
39
kg
Targeted Organs
Subcutaneous & visceral (pre-denning)
Adipose Depots
Subcutaneous (pre-denning), visceral; marrow
Preferred Cuts
Subcutaneous fat layer
Hunt Difficulty (x/5)
5
Historical Entries
May 13, 1911
Vilhjalmur Stefansson
My Life with the Eskimo - Chapter 18
The Eskimo of Banks Island and Prince Albert Sound would live chiefly on polar bears through the winter because they didn't know how to hunt caribou on the ice.
Range of the Kanghirgyuargmiut. In summer some of them (a few) hunt towards Minto Inlet; some hunt southeast and meet the Puiblirgmiut; most, however, hunt east and meet the Ekallugtogmiut and Ashiagmiut who live “on the east coast of our country, which is not far from here overland, and good sledding because we go by the rivers.” Some join the Ekallugtogmiut for a time and with them visit the Arkilinik (near Baker Lake above the head of Chesterfield Inlet] “where there are trees, and where the people have guns and white men's clothes.” (Have seen many metal articles, one shirt, one red knit woollen hood, etc., brought from these trips. ) They never met the Nagyuktogmiut. One man at least — Hitkoak has been both to the Akilinik and to Umingmuktok.
In the fall they (the Kanghirgyuargmiut] come to Prince Albert Sound and proceed to Banks Island where in winter they live chiefly on bears (some entirely; others partly on seals) off Nelson Head and east of it. When bear hunting they often see Cape Parry [on the mainland to the south ]. Nelson Head can be seen from Parry only from the hill tops, and that rarely, and it is much higher than Parry, so they must hunt almost to the middle of the strait.
They usually have houses on or by the shore when in Banks Island. They often see caribou but “do not know how to hunt them in winter.” They know there are musk-oxen inland but they do not go after them. In spring they return to the Sound and soon scatter to the various hunting places. Those going to the Ekallugtogmiut are already on the way intended starting the day after we came to the village and delayed for us). Those going north towards Minto do not leave the sea till “ the snow gets soft on the ice.” Wednesday, May 17. Have given up going farther in direction of Banks Island, as there are no people that way. Started 3:30 P.M. heading for Cape Back about true southwest. Camped 7:30 P.M. to get chance to write up some of my briefer notes before the fillings-in are forgotten or misremembered. Game. No seals seen on top the ice -- ugrug (bearded seals) are to be expected nearer land and seals are not up yet. Crossed about 400 or 500 caribou tracks, i of them over a week old. Migration seems over, or at least there is a lull. Saw three bands of eight, seven, and three. The latter two Natkusiak tried but got shot at last only three misses on the run at 200 yards. Ptarmigan seen every day, mostly ( or all ?) rock ptarmigan. Crows every day. No snow buntings since leaving Walliraluk. Distance traveled: 12 miles.
Pamiungittok tells : The Banks Island people used to be well off. They killed so many deer and [musk ] oxen that their dried meat sometimes lasted the year round. They got to killing each other. One man killed had relatives in the Sound. For this reason (i.e. because of witchcraft practised by the dead man's relatives in the Sound ) food became scarce [ in Banks Island ); there were no seals for food or fuel and the people died of hunger -those that had not been murdered in the feuds. This happened some fifteen years ago i.e. when Agleroittok (who is now about twenty - five) was a boy but [after] his two brothers (were] grown up.
January 2, 1922
The Northern Copper Inuit - A History
The modernization of the Inuit of the Holman region is described. Inuit are lent a debt and can no longer engage in midwinter subsistence hunting when trapping foxes. Trapping was fully entrenched by the 1940's in the Holman region and people were eating sugar and flour instead of seals, caribou, and polar bears.
As the Inuit of the Holman region developed a taste for trade items such as tea, sugar, tobacco, and flour, they began to rely more heavily on fur trapping as a means to purchase these items. The transition from traditional ways was undoubtedly assisted by the Copper Inuit's contact with the western Inuit (or Walliningmiut), who had developed a reputation for being superb trappers. Increased dependence upon trapping, however, changed the Inuit economy. Since trappers had to tend their traplines during the winter, they had less time to devote to midwinter subsistence activities such as sealing, caribou hunting, and polar bear hunting. The more involved people became in trapping, the more dependent they became upon goods purchased at the trading posts. Moreover, the size of dogteams increased. In the early part of the century, anthropologist Diamond Jenness had noted that the typical Copper Inuit family rarely owned more than two or three dogs (Jenness 1922:118). Trapping, however, required greater mobility and hence a larger number of dogs per active trapper. Inuit families trapping for the fur trade had a larger number of dogs to care for and feed. Fortunately for them, the introduction of rifles and fishnets helped to increase their efficiency and trapper families were able to feed both themselves and their dogs.
This process of economic change occurred at different rates for the Holman and Coppermine regions. The Copper Inuit around Coppermine and Read Island made the transition much earlier than the people of Prince Albert Sound. By the 1940s, however, trapping was firmly entrenched in the Holman region.
Although the trading posts provided Inuit trappers with valued goods which presumably made their lives easier, the relationship between trapper and trader was not always to the benefit of the trapper. As Peter Usher (1965:62) notes:
The relationship of the Eskimo to the trader became virtually that of a bonded servant. To trap initially the Eskimo had to be supplied with traps, and generally a rifle and other gear. Having no means to pay for this outfit, he went in "debt" to the trader, and settled his account the following spring by bringing in his catch of furs. Both the availability of the white fox and its market price fluctuated considerably, and in some years the Eskimo was unable to pay his debts. This indebtedness prevailed for almost thirty years, until other sources of cash became available to the Eskimos.
January 1, 1911
The Northern Copper Inuit - A History
The Copper Inuit people operate in a remote and frigid landscape and have unique habits to hunt seals and polar bears on the ice. They split up to cover more area and thus share kills between group members, separating seals up into 14 pieces while building large snowhouse communities with many families.
Despite uniformity of culture and language, the various miut displayed minor differences, based upon their adaptation to local resources. While some groups were primarily dependent on seal and polar bear, others focused on caribou and musk oxen. Although people exploited whatever resources happened to be available in their particular region, the pattern of subsistence and social organization was fundamentally the same. At the time of contact the total population of Copper Inuit was probably no more than 800 to 900, scattered over a vast territory of Arctic tundra, probably exceeding 80,000 square miles.
Environment
The environment of the Copper Inuit is mostly treeless Arctic tundra, although some wooded areas can be found in the southernmost reaches of Copper Inuit territory. The climate is severe, with winter temperatures frequently reaching -50 degrees Fahrenheit(-45 degrees C) in some areas. The monthly mean of the coldest month of the year, February, is between -20 and -28 Fahrenheit (-29 degrees C and -33 degrees Celsius) and the monthly mean of the warmest month, July, is in the high forties 7 to 10 C. Precipitation is minimal. Most of this falls as snow and accumulates in high drifts as a result of blowing winds. The amount of sunlight varies dramatically by season. In the Holman reason, for example, the sun drops below the horizon in the third week in November and stays down until January 16th or 17th. During these two months, there is only a brief daily period of twilight at midday which becomes progressively darker and shorter until the winter solstice. In summer, the sun stays above the horizon for an equivalent period, providing, as it circles, long hours of sunlight for people to hunt, fish and travel.
As is true of much of the Canadian Arctic, the tundra ecosystem is characterized by extremely low biological productivity. Significantly less energy is absorbed by the arctic ecosystem, compared with more temperate regions. Almost no energy is absorbed in winter. Even in summer, with the sun above the horizon 24 hours a day, the sun's rays are extremely weak, contributing little radiant energy to either the time or the Marine ecosystem. The net result Arctic operates under a significant energy deficient, with great implications for plant and animals and for the people who depend upon them for survival.
In winter, the straits, sounds, and gulfs in Copper Inuit territory are frozen in a continuous sheet of ice from October or November until July. This is ideal habitat for ring seals, which prefer solid, land fast ice with the early formation in fall and late Break Up In Summer.
Seasonal round
Since the environment was marked as it still is by dramatic seasonal fluctuations in temperature, light duration, snowfall, ice conditions, and game availability, copper Inuit families had to display great flexibility and economic and social organization in order to adapt successfully to the demands of each season. One of the most important phases of copper Inuit life was the winter season of breathing hole sealing. this was the coldest and the darkest time of year and it tested the Inuits ability to survive such harsh conditions large snow house communities typically formed out on the sea ice in locations close to good sealing grounds. movement onto the ice was accomplished as soon as ice conditions became stable enough for travel and camping, ideally by late November or early December. These snow house Villages buried in size from about 50 individuals to as many as 150. Damas (1984:400) estimates that the mean size range from about 91 to 117. Most of the people who resided in the snow house Villages were related, either closely or distantly, but many non-relatives were included as well. Villages moved when sealing became unproductive, with smaller groups occasionally splitting off.
Camping in Winter
Ruth Nigiyonak. I remember camping in the winter season out on the Frozen sea ice. As a child, during the winter, the people never stayed on land. When winter came, the people moved out on the ice. For the winter, the people would build large snow house with a big work space in the center. From the sides, they would build tunnels. At the end of each tunnel, a family would built their living quarters. The center was a workspace or a place to gather for games, drum dances, and stories. That was repeated each year.
During the winter, an elaborate system of seal-sharing among both kin and nonkin was the dominant form of food distribution. Breathing-hole sealing requires a degree of cooperation among hunters, who dispersed over a wide area to cover as many breathing holes as possible. Since each seal maintains a number of breathing holes, this strategy maximizes the chances that at least one hunter from a group would be successful. Once caught, the seal is divided into 12 to 14 Parts, each part given to a predetermined exchange partner who would reciprocate sometime in the future with the same body part. Names were applied to seal sharing Partners based on the animal part exchanged: flipper companion, liver companion, and so forth. A man's co-sharing partners were usually assigned by parents and other adults at the time of a hunter's first kill. Kinship factors were irrelevant to such partnerships since both kin and nonkin could be included in these networks.
Winter subsistence pursuits also included polar bear hunting and some areas, the importance of which for subsistence varied from year to year depending upon availability. The Copper Inuit who entered between Banks Island and Northwestern Victoria Island relied more heavily upon polar bear than other Copper Inuit groups.
Winter was an important time for Community social festivities, which were included in a large ceremonial snow house or qagli. Because cold, darkness, and the frequent blizzards limited the amount of time that men could stay out hunting, people would pass their time playing games, drum dancing, and occasionally observing shamanic performances. Given the size of some snow house communities, it was not unusual for the qigli to be bursting with observers and participants. The copper Inuit spent much of the spring, summer, and early fall wandering on the tundra and small family groups, and winter presented the climax of community social life.
With the arrival of warmer weather and longer daylight hours in April and May, the Copper Inuit started hunting for basking seals. This was a more individualistic pursuit, requiring the hunter to walk and crawl great distances to Harpoon seals basking next to a crack or seal hole. Breathing hole ceiling, as well, continued into May, and some copper and you it made excursions to hunt polar bears as their hibernation ended. By Spring, the large snow house communities usually started to break into smaller groups each headed in a different direction. Movement was initially along the coastline, because the tundra would still be wet and unpleasant for travel. Eventually, the ocean ice was abandoned altogether, marking the beginning of the Inland phase of the yearly cycle. The abandonment of snow houses in Spring is understandable. As warmer weather conditions made the interior wet and uncomfortable, modified snow houses were made. He's consisted of the lower half of a snow house with a skin roof over it. As the year progresses, skin test tents replaced those these modified snow houses as people moved up to the land.
January 1, 1914
Book of the Eskimos
"We just ate, and I learned what was good. The diet of the Polar Eskimos is actually healthful and varied. When you have meat and meat, and meat again, you learn to distinguish between the different parts of an animal."
It took me three weeks to build the house, and when Knud returned, he started a series of house-raising feasts in grand style. Actually it was one single celebration, but it lasted a couple of weeks. At the time, there were eight families in the settlement, and they all seemed capable of eating at every hour of the endless day. As I have mentioned, sleep was permitted during the banquets, but expressions of satiety in the form of air explosions from every possible opening of the body seemed to be good substitutes for sleep. Knud was at the head of them all. He sang and told stories; he cooked and arranged food orgies the like of which had rarely been seen. His ability to drum up edibles was formidable. We didn't have to supply much of them, ourselves. It was Knud's special art during a meal to start reminiscing about gigantic feasts of yore. Then his eyes assumed a dreamy look while he softly mumbled something about tail of narwhale, well fermented, rotten eider ducks, or other beautiful treats.
Immediately, somebody or other jumped up and demanded to be allowed to show that also in this place such palate-caressing articles could be prepared. Knud expressed a little doubt—but no more than to make it a challenge. The result was always that the man and a couple of his friends ran off to fetch the delicacies. They might otherwise have been set aside for the visit of a dear relative or some such purpose. Now they went to Knud and his guests, almost the entire settlement. Our house seemed to have inexhaustible riches. How we procured all that was consumed I don't know; that was Knud's department. He just told somebody or other to go out and get some cooking meat. If then the poor fellow went out to obey the glorious command, and it happened that he returned to report that there was no more meat on the rack, Knud turned a little joke in his direction so that everybody present laughed at him. The man couldn't bear this loss of honor; he went out again and came back with all he could carry. There was no point asking where he got it from: meat was considered common property, so it didn't really matter.
We just ate, and I learned what was good. The diet of the Polar Eskimos is actually healthful and varied. When you have meat and meat, and meat again, you learn to distinguish between the different parts of an animal. The breast doesn't taste at all like the muscles of the hindlegs, for instance. And little by little I learned the finesse of Eskimo food preparation. One of the greatest delicacies, narwhale skin, is either served fresh and raw, or it is preserved with dried meat in big skin bags filled with blubber. Seals are used either as boiling meat or put in the meat cache to ferment, whole and unskinned. Then their meat tastes strong and sweet as sugar, and the liver is particularly desirable, tasting somewhat like preserved cranberries.









