This video of a male polar bear swimming in frigid Arctic seas displays how polar bears have increased their range of habitat in ice – free waters after break – up. Searching for seals for meals has extended past the traditional hunting season and the king of the Arctic can be found 60 miles or more from land swimming between scattered ice floes.
Polar bears have a different way of keeping warm from that of seals and whales. The latter two mammals species have blubber that contains protein and allows for body structure to have a springy, tough fibrous consistency enabling ease of movement in water. Polar bears do not have blubber but rather a layer of adipose fat up to five inches thick that facilitates energy storage for the shoulder seasons when food is scarce. Since polar bears spend the majority of time on land or ice above the water they rely more on the insulation of their fur.
Polar bear’s thick underfur is topped by varied guard hair lengths creating an incredible insulation buffer for the fat layer. The temperature of the fat closest to the polar bears skin is nearly the same as that close to the body core. This temperature consistency allows polar bears to conserve energy effectively.
Polar bear fur is actually transparent and hollow and appearing white from reflecting light. Polar bear fur appears whitest when they just emerge from water and sunlight comes from higher angles. molting occurs in spring and ends by later summer. Seal oil and dirt accumulating in their fur can cause a common yellow tint throughout a good part of the year. The video below illustrates how the fat layer of polar bears works as opposed to blubber of whales and seals.
These photos from Churchillian Katie de Meulles are from the annual Canada Day polar bear plunge into the Hudson Bay. With a water temperature around 40 F, the plunge will numb you pretty fast. I’ve experienced the event firsthand and my legs went numb halfway out to the flags….still a great day of Churchill fun!
Polar Rovers are a safe way to get up close with the polar bears of Churchill. Bears are attracted by various scents from the machines as well as travelers. In a land where food is the driving force or polar bears at this time of year, polar bears are keenly attuned in to any smells out of the ordinary. Enjoy these close encounters!
Curious polar bear and curious onlookers. Natural Habitat Adventures photo.
A polar bear in Churchill sniffs travelers on a polar rover. Natural habitat Adventures photo.
Sniffing around the Polar Rover. Natural Habitat Adventures photo.
Polar bear posing for a snapshot. Natural Habitat Adventures photo.
Curious polar bear detects a scent. Natural Habitat Adventures photo.
The first grizzly bear possibly ever seen in Churchill was spotted just outside the Churchill Northern Studies Center last Thursday in the late evening. A group of residents entered the center and alerted the staff that they just saw a grizzly bear outside. A group of high school students staying at the center from Sisler High in Winnipeg and some staff rushed out to a second floor observation deck and shot this video. Assistant director of the center Heidi den Haan snapped a few photos of the bear before he wandered off.
“There’s very, very few sightings in the park. But to actually have one here? And to have everybody see it? That’s very, very rare for sure,” den Haan said. “We have polar bears coming around the centre all the time. We’re right on Hudson Bay. But grizzlies? There’s just this one. Oh yeah, this is definitely singular. The kids are extremely lucky to have witnessed it,” den Haan said.
Barren ground grizzly spotted near the Churchill Northern Studies Center. Heidi den Haan / CSNC photo.
The sighting comes just weeks after researchers in Wapusk National Park, known for its polar bear denning area, circulated photographs of grizzly and black bears roaming the tundra. The park is 100 kilometers southeast of Churchill. The researchers believe the bear spotted in Churchill and brown bears out in the park are barren ground grizzlies. These grizzly bears are a little smaller then Rocky Mountain grizzlies. They are also considered more aggressive. Omnivorous in their feeding habits these bears hunt caribou, ground squirrels, eat berries and scavenge carrion.
Grizzly bear outside the Churchill Northern Studies Center. Heidi den Haan/ CSNC photo.
There have been reports of barren ground grizzlies mating with polar bears. Offspring from this hybrid match are called grolar or pizzly bears and sightings are extremely rare with the only reported sightings coming from the western high Arctic.
Stephen Atkinson, a biologist working with Nunuvut and Northwest Territory governments speaks to the unique overlap of boreal forest and tundra terrain in the Churchill region. This incredible blending of ecosystems allows one the possibility of seeing grizzly, polar and black bears all in one day or at least one visit to Churchill. ” There’s nowhere else in the world you can see that, it’s an opportunity to see all three species of bear,” said Atkinson.
