Polar bears can swim for days in open water without rest, says new research. The study tracked 52 female polar bears off Alaska between 2004 and 2009, and found that about a third of those bears made swims of more than 30 miles during that period.
How long can polar bears stay in water for?
Polar bears usually swim under water at depths of only about 3-4.5 m (9.8-14.8 ft.). They can remain submerged for more than one minute. Maximum dive duration is unknown; however the longest polar bear dive observed to date lasted a total of 3 minutes and 10 seconds covering a distance of 45 to 50 m (148–164 ft.)
Why do polar bears swim for so long?
Polar bears typically migrate to follow the sea ice, which they use as their hunting grounds. But as the Arctic warms, the edge of the sea ice in summer has moved farther and farther north, sometimes hundreds of kilometres from shore, forcing the bears to swim farther and farther to find stable ice.
Do polar bears eat humans?
Bears. Polar bears, particularly young and undernourished ones will hunt people for food. … Truly man-eating bear attacks are uncommon, but are known to occur when the animals are diseased or natural prey is scarce, often leading them to attack and eat anything they are able to kill.
Do orcas eat polar bears?
PREY: The orca is at the top of the marine food web. Their diet items include fish, squid, seals, sea lions, walruses, birds, sea turtles, otters, other whales and dolphins, polar bears and reptiles. They even have been seen killing and eating swimming moose.
Do polar bears eat penguins?
Polar bears do not eat penguins, since penguins live in the southern hemisphere and polar bears live in the northern hemisphere.
What is the average lifespan of a polar bear?
LIFE CYCLE: Polar bears can live up to 25 or 30 years in the wild.