Polar Bear adaptation to the wintery and bitter Northern climate is one of nature’s marvels. The shifting sea ice, where polar bear live, is one of the unkindest and most relentless climates on planet earth.
It’s only in modern evolutionary time that bears adjusted to arctic sea life. It commenced during the Ice Age, in the northern seas, when the seals needed to breathe and mate near the water’s surface. By doing this, the seals placed a rich year-round food source near a population of brown bears, who then began to inhabit the ice, developing into something similar to the polar bear of today, around 100,000 years ago.
Weighing about 330 to 1,760 pounds, the length of the polar bear’s body is approximately 6.6 to 10 feet. The male body is usually bigger than the female. The polar bear, akin to the brown bear, is heavy and heavyset. It has an drawn out neck and small head. Its fur, normally white, occasionally appears yellow, due to oxidation.
A polar bear has black skin, which assists it’s adjustment to the Arctic temperature, absorbing and holding heat from the sunlight. It is unquestionably well attired for the weather with a layer of fat more than 4 inches thick, allowing for efficient insulation. The dense fur on its feet (its foot is about 9 inches wide and 12 inches long) allows for warmth and traction. Since each foot is so big, it acts as a practical snowshoe.
It adjusts well to swimming with its wide front paws that serve as paddles and when swimming underwater it lays the small ears flat for protection, and its nostrils close under water. It paddles at about 6 and one-half miles per hour –forepaws only, hind paws trailing–and can remain under water for about 2 minutes. The hairs of its waterproof coat are hollow which is an effective insulator and increases the bear’s buoyancy while swimming.
A polar bear has a keen sense of smell, sensing prey at a distance of about 20 miles. Although little is known about its sense of touch (its eyesight and hearing is acute), a polar bear is able to manipulate varied objects with great dexterity.
With canine teeth larger and malariform teeth sharper than those of different bears, the polar bear is the most carnivorous North American bear.
A polar bear inhabits Arctic islands, sea ice, and water and continental coastlines. It favors the sea ice habitat, with water channels or cracks through the ice, next to continental coastlines or islands. Some polar bears spend part of the year on land, although in warmer climates a bear could become stranded. Most pregnant females spend the autumn and winter on land in maternity dens.
A polar bear journeys throughout the year within single home ranges, which are inclined to be larger than for other mammal species because of the alterations in sea ice from year to year and even season to season. Small home ranges (19,000 to 23,000 miles) can be found near Canadian Arctic Islands, while larger home ranges can be found in the Bering or Chukchi Sea areas. The polar bear remains in the general area during the same time of year. A polar bear walks 19 miles or more per day for several days, although some are capable of much more than that. One can only hope that polar bear adaptation will continue, as their habitat area shrinks and the pressures of civilization continue to encroach on the the natural homes where the polar bear calls home.
Related posts:
- Polar bears in danger The polar bear is the largest terrestrial carnivores of the world, but its Latin name (Ursus maritimus) notes that spends...
- Save The Polar Bears Today, all attention is paid to the fact that in a few decades all over the ice at the North...
- The polar bear “expelled” from its habitat A long-term study that shows changes in the habitats of polar bears in response to changing sea ice conditions in...
- The dramatic images of polar bears adrift on an iceberg What a poor polar bears? The dramatic images of this post show mother bear and her cub about nine months...
- Will Polar Bears Survive The Threat Of Melting Ice? Will polar bears make the leap into the next century? Recent studies project that if Arctic sea ice continues to...
January 19th, 2010
Beruang
Posted in
Tags: 


With a very long lens.
Great Video!
8l *speechless*
LOLOLOLOLOLOLOLOLOLOLOLOLOL
thats a gay song!
Avoid vaccines, they contain aluminum, mercury, aspartame/formaldehyde, squalene, mutagens etc that cause diseases like lupus, arthritis, Gulf War Syndrome, Zombie/Sheeple Syndrome, Parkinsons, Alzheimers, allergies, asthma, cancer, ADD/autism etc. The genocidal WHO that pushed the h1n1 shot should have promoted garlic, vitamin d3, silver products etc. to oust za vampires & verevolves!
Orcas, or Killer whales, sharks, and Man.
Polar bears main diet is seals, NOT Penguins…there are no penguins in the Arctic, wrong end of the world, and no Polar bears in the antarctic, where most penguins live…
Sharks, killer whales, and man are the #1 predators of seals in the arctic, and therefore the Polar Bear's main competition.
The main danger to the polar bears is golbal warming, without arctic pack ice, the population in the wild will not survive.
http://www.polarbearsos.org/
I think the ultimate representation of the irony of mankind's interference in natural order is the day Greenpeace is out off of Newfoundland clubbing baby seals to feed to starving polar bears.
sooooooooooooooooo funny ! its awesome you guys well buy!!!
How big? If it's a tabletop bear, you could use foil. But a life size bear would need chicken wire or pvc pipe.
.
Hi Jon… you may be able to visit a polar bear, however most exotic animal facilities are unable to accommodate close contact of dangerous animals or take a chance putting them at risk while they are sedated. The liability of injury is too great for the staff and visitors which is partially why this isn't allowed.
Perhaps, you could ring several of your local exotic animal facilities to ask if they know if this arrangement is possible and who offers this.
Thats funnie!
Gross 2:20
you guys will never have as much bad luck as bernard…poor polar bear
The bathroom represents a very personal type space, that the polar bear is trying to invade. You must feel that someone or some people with quite a bit of power are trying to control you or manipulate you, and may be abusive to a degree. You don't seem to be keeping people from violating your personal space, and your rights that well at times. One does have to be a spiritual warrior at times, fighting one day at a time, to protect one's place in this world and one's rights. One sometimes has to avoid associating with the wrong type people, and also stand up for one's rights as effectively as one can. One should have a safe place where you can go to recharge your batteries, and take care of your personal needs. One has to be quite strong spiritually to defend oneself against bullies. Meditate/pray, exercise, and eat healthy, so that you will be spiritually strong, and able to defend your position and rights in this world.
@1423078943120789 lol!
that was funny very funny
To answer your question. Grizzlies (closely related) have been known to kill full grown 1200 lb steers with a single blow to the neck (consider that these same cattle ram each other in fights and do not accomplish this). This is well documented. Yet in fights these same grizzlies shake off blows from other grizzlies as minor irritations (unless the two grizzlies are very unevenly matched).
Now suddenly we switch to an even bigger and stronger bear and you ask if a human could knock one out with a baseball bat. How mad are you trying to make this bear and how many peices of the man do you want left?
BTW bears have been known to track men that have hurt or just irritated them for miles, lay down and wait until late at night and then go in and drag the man out to maul him. Until recently that was just documented stories for me but recently I happened to meet someone whom had first hand knowledge. Turns out a friend went up to Alaska to hunt grizzlies. But when he arrived he was told that the guide was unavailable. Turns out that during the hunt before his, the guide turned to the hunter and said 'We aren't hunting this bear any more he is hunting us." They tracked it for a little further then went back to camp. 1:00 in the morning the bear pulled out the guide, drug him off a few hundred yards and mauled him. The other camp members scared the bear off but the guide had to go to the hospital.
Now did the bear just get lucky when he went after the guide or did he actually know who the threat was?
nice post. Was really interesting in general and lots of new info for me which i didin’t know before reading your post.
This is a good posting, I was wondering if I could use this post on my website, I will link it back to your website though. If this is a problem please let me know and I will take it down right away.
I love the Ice Age movies, super animation.
hoping all around for the perfect web-site getting you.