Polar bears have been seen walking in a straight line for 32km (20 miles) to food, with only their nose to guide them. There are also small depressions in the pad that function as little suction cups and increase the grip of the polar bear’s paws on the ice when it runs (Stirling and Guravich 1990, p 25). We believe an Arctic without polar bears is simply unthinkable! In areas such as Greenland, the Bering Seas or Chukchi, the bears may have to relocate many hundreds of kilometers each year to remain on the ice where they can still hunt seals. A fertilized polar bear egg doesn’t implant or develop right away. Some polar bears have been know to live as long as up to 32 years (Stirling and Guravich 1990, p 139-140). A ‘still hunt’ is when the polar bear has located an active breathing hole a seal is using. The toes form an arc similar to a black bear’s track. Not only this, Polar Bear can smell a seal which is 3 feet beneath the ice from a distance of 1 km (0.6 mi) LiveScience is where the curious come to find answers. The weight of an adult female polar bear is recorded somewhere between 150 to 250 kg. Hunting: Polar bears utilize two different types of hunting. They are excellent swimmers, and the coldest water does not bother them. Their mother had been wearing a radio collar for research purposes. Females usually weigh from 330 to 720 lbs (Lynch 1993, p 58), while a super-fat pregnant females may reach as much as 1,100 lbs (Stirling and Guravich 1990, p 23). Even though polar bears look white, their hair is really made of clear, hollow tubes filled with air. The cub soon learns to remain silent and observe the mother’s movements. The common garden worm has five pairs of hearts. Scientists believe some polar bears can smell a seal under 3 feet of ice or from almost a mile away. Baby, it's cold outside! They have been known to swim more than 60 miles (about 100 kilometers) without rest in search of food, using their broad front feet for paddling and their back legs like rudders to steer. When two polar bears meet, they have a special way of greeting each other. Polar bears are the only bear species to be considered as marine mammals. The polar bear is the newest of the eight bear species, and scientists believe that the polar bear evolved about 200,000 years ago from brown bear ancestors. A polar bear can smell a seal from 20 miles away. The weight of an adult female polar bear is recorded somewhere between 150 to 250 kg. When the mother begins to stalk for food, the cubs will lie down and not move until she is finished her hunt. ♪♪ At three months old, they need six rest breaks a day. **40 is listed 3x and 50 is listed 2x. The ringed seal is the polar bear’s main prey, as it is the most numerous seal in the Arctic. Distribution and Population: Polar bears are found throughout the ice-covered waters of the Arctic region and prefer to remain out on the sea ice all year if possible. POLAR BEARS The largest bear in Alaska the polar bear has very special adaptations. Dens are usually single chambers, slightly elevated from the entrance tunnel so warmer air remains with the female her and cubs. They have a nictitating membrane, or third eyelid, that allows them to see underwater and protects their eyes in blowing snow. 1926 Highway 169 All three love to swim and play, and to explore the vegetation and ever-changing enrichment items keepers provide throughout the Polar Bear Plunge exhibit. At birth, the polar bear is the size of a squirrel, weighing about 1 to 3 pounds, and by 3 months, the cub may weigh 20 pounds. Mother bears spend 35% of their time hunting (Stirling 1990, p 120 and 125). When that occurs, the polar bear … The current swimming distance record for a polar bear is 686 km (426 miles) non-stop. Polar bear feeding on a seal | Source. It is 2 to 4 inches (5 to 10 centimeters) thick. Activity Step 1: Copy and pass out the activity sheet titled “How Do I Measure Up?” on page 10. It also muffles the sound of the bear’s approach when sneaking up on a sleeping seal. Unlike brown bears and black bears, polar bears do not hibernate, and only pregnant females over-winter in dens. The exhibit’s revolutionary design offered amazed visitors close and unobstructed views of three polar bears. The Arctic has warmed twice as fast as the rest of the world, resulting in a sea ice decline of 13 percent each decade since 1980. The Great Bear Almanac. Exclusive. No wonder many people call them "noses with legs!". Polar bears have also sniffed out a seal ten football fields away that was hidden under 1m (3') of ice. Ely, MN 55731, (218) 365-7879 But most experts agree that polar bears are the longest bears, as males may measure over 10 feet (3 meters) when standing on their hind legs. Right now they can only live well in one type of habitat, on the sea ice. A polar bear has to solve two physiological problems; maintaining their body temperature in a cold climate, and being able to store enough energy to last between meals that could be days or even months apart (Stirling 1990, p 143). Vocalizations: Polar bears vocalize as follows in response to their emotions: Reproduction: A male polar bear’s territory generally overlaps the territories of several females – giving the male an opportunity to mate with more than one female. No hibernating. The polar bear often relies on "still hunting" -- patiently waiting next to a hole in the ice until it senses a surfacing seal. Two tiny scoops of snow from a polar bear track revealed not just the DNA of the polar bear that made it, but even from a seal … Polar bears at the San Diego Zoo get a fortified meat-based commercial carnivore diet, dog kibble, trout and other fish, as well as root vegetables and lettuce as treats. The nostrils close tightly underwater. Moms are quite attentive and groom and touch the cubs with their muzzle often (Stirling 1990, p 88). A polar bear in the midst of eating a seal may smell of that endeavor, while an adult female emerging from the den with a newborn may have a stronger smell as well. 6. Polar bears will track down seal holes and wait by them until the seals rise out of them to breathe and then attack. Males have been known to follow a breeding female for up to 60 miles and will engage in intense fights with other males in the area. Smell A polar bear has one of the best noses in the entire world and are well known to have an incredible sense of smell. But they can smell much better. Today, our polar bears live in a wonderful tundra habitat complex: the Conrad Prebys Polar Bear Plunge. These dogs need to run; the only time they calm down is when they’re hurtling headlong down a snowy track, focused on whatever’s ahead. Stefansson, a Canadian of Icelandic origin, often accompanied them on these treks and also lived off of pemmican quite happily, so its sustaining powers weren’t due to some specific genetic adaptation unique to the Inuit. They usually kill a seal every 5-6 days. After the age of 50 days, their canine teeth begin to grow in. Nonfiction DRA2 options are available for Levels 16, 28, 38, 40, 50. The polar bear's nose is so powerful it can smell a seal on the ice 20 miles (32 kilometers) away, sniff out a seal's den that has been covered with snow, and even find a seal's air hole in the ice up to 1 mile (1.6 kilometers) away. The bottom of the paw is completely covered with fur. Male polar bears generally weigh between 770 to 1500 pounds (Stirling and Guravich 1990, p 23) but can exceed more than 1500 lbs. During the mating season, male bears rely on their sense of smell to locate females. Diet: The most important time for a polar bear is during the months of April through July when the ringed seals are abundant. This can be a dangerous situation for both humans and bears. In fact, most of them (except pregnant females) continue to hunt seals throughout the winter. Ringed seals form the basis of their diet during these months (Lynch 1993, p 64). The polar bear eats seals, fish and fruits (berries). During a ‘stalk’, the polar bear picks up the scent of the seal and tactfully moves closer to the seal.
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