Are there polar bears in Antarctica?
If you travel all the way to the White Continent expecting to see polar bears, you’ll be in for a big disappointment. There are no polar bears in Antarctica! Their natural habitat is the Arctic, where you can spot them mostly above the Arctic Circle on the sea ice of the Arctic Ocean hunting for seals, swimming in the ocean or tending to their cubs. But don’t ditch your Antarctic expedition just yet! There is lots of other amazing wildlife down south to explore, such as penguins, whales, seals and an abundance of rare seabirds. (The same geographic divide works in reverse — find out why: Are There Penguins in the Arctic?)
Why don't polar bears inhabit Antarctica?
Polar bears evolved relatively recently
Polar bears are a young species. Evolving from their common ancestor with common brown bears less than ca. 480,000 years ago, their fur changed color at some point to white to blend with their icy surroundings. According to researchers, a group of brown bears may have migrated north during a warmer period and got trapped when the cold set in. Left to quickly adapt or die, thus the first polar bears evolved. Polar bears have white fur for camouflage, shorter claws so they can comfortably walk on ice and better night vision (to cope with the long polar nights in winter). In comparison to their brown bear relatives, they sustain on diets that take calories mostly from meat and blubber (and not carbohydrates such as grass and vegetables).
Antarctica is geographically remote
Polar bears never got the chance to migrate south during their relatively recent evolution. Animal migration usually relied on land routes to spread to other regions. The North and South Poles were never connected by land bridges, so bears were not able to move that far south. While most bears are found in the Northern Hemisphere, a few migrated to southern regions, like the Andean bear (found in South America).
Antarctica’s isolation, however, began much earlier. As the ancient supercontinent Gondwana broke apart about 180 million years ago, tectonic plates carried Antarctica away, putting it beyond the reach of many species that would come after. By the time polar bears evolved, their lineage had diverged from brown bears around 479,000-343,000 years ago, according to a 2014 Cell study. At that time, there was no land migration route connecting the Arctic with Antarctica.
How far south do polar bears go?
Polar bears are iconic of the Arctic regions, but their range extends farther south than you might expect. The southernmost breeding population of polar bears is found around James Bay in Canada, at approximately 53°N latitude. That is surprisingly close to the latitude of London, which sits at around 51.5°N. James Bay is part of the southern Hudson Bay region, where polar bears depend on seasonal sea ice to hunt seals. During the ice-free summers, bears can spend several months on land while waiting for the sea ice to freeze again. But that’s about as far south as polar bears have made it in the wild, and no polar bear has ever reached the Southern Hemisphere, let alone Antarctica.
Extremely low temperatures
Antarctica is much colder than the Arctic. Would polar bears adapt to these lower temperatures if they were to be relocated to the White Continent? No polar bear has ever made the trip down south, so there is no clear data on this. Polar bears are known to withstand freezing temperatures in the Arctic as low as -46°C (-50°F), but record lows in Antarctica were measured at -89°C (-29°F). While adult polar bears may adapt to these extremes, it is questionable how this would affect their more vulnerable offspring.
And placing polar bears in Antarctica due to Arctic sea ice loss may just be a temporary fix for a greater problem. While initially Antarctica was lagging behind the ice loss in the Arctic, it is quickly catching up. From the late 1970s to the 1990s, Antarctica was losing ice at around 40 billion tons per year, and by the 2020s, that figure had reached nearly 150 billion tons per year. This rapidly changing environment would create additional challenges for any species attempting to establish itself in Antarctica.
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What is the current global population of polar bears?
According to a 2024 report by the IUCN/SSC Polar Bear Specialist Group, around 26,000 polar bears are estimated to roam the Arctic, with an estimated range of 22,000 to 31,000 individuals. Polar bears are divided into 20 recognized subpopulations, many of which inhabit remote areas of Canada, Greenland, Alaska, Russia, and Norway. As they live in extremely remote areas, it is difficult to study and monitor their behavior and movements.
Considered a marine mammal, these remarkable giants spend most of their lives on the Arctic Ocean and its sea ice, hunting for seals and other prey. If you want to learn more about these incredible creatures and spot them in their natural habitat, join one of our expedition cruises to the Arctic. Travel to the remote fjords of Greenland for a chance to see them.
Or join us on our cruises around Svalbard and the polar ice edge and spot them in their natural habitat roaming the pack ice.
Cruise aboard the small 114-passenger expedition ship M/V Sea Spirit, and observe iconic Arctic wildlife. Our onboard specialists will help you understand the polar bears’ lifestyle and behavior, the need for conservation, and answer any questions you’ve always wanted to ask about polar bears.
Can we relocate polar bears to Antarctica?
With climate change and sea ice receding rapidly in the Arctic, why not relocate endangered polar bears down south? Polar Bears International (a non-profit conservation organization) and many other scientists emphasize that this isn’t a good idea or a realistic way to save polar bears.
While polar bears could theoretically thrive on the White Continent and gorge on the ample delicacies of Antarctic wildlife, it would be bad news for penguins, seals, and lots of seabird species. Polar bears would not only hunt penguins but also ravage their nests for eggs. With an abundance of fur, elephant, Weddell, and crabeater seals available, polar bears would thrive and multiply rapidly. In short, Mr. Polar Bear’s arrival would disturb the natural biodiversity of Antarctica and harm many of the native species, potentially disrupting ecosystems well beyond the immediate area.
Dr. Steven Amstrup, a zoologist and Chief Scientist at Polar Bears International, agrees that the risk of relocation far outweighs the benefits. While prey such as penguins and seals would be rather abundant for polar bears, their introduction could deplete local prey populations and put Antarctica’s native species in danger. Penguins are not used to terrestrial predators and are incredibly slow on land.
FAQ
Can a polar bear live in Antarctica?
Hypothetically they could withstand the cold temperatures and would find an ample variety of food available in this new environment, with barely any natural predators. But polar bears in Antarctica would be disastrous for the biodiversity of the Antarctic region. Penguins, seals and many rare seabirds would be on a polar bear’s meal plan, without any natural predator to control the number of polar bears. There is also no natural land bridge for polar bears to migrate south, so the only way to introduce a polar bear to Antarctica would be by humans, relocating them artificially.
Where is the best place to see polar bears?
The best spots to visit polar bears are coastal areas in the Arctic. Polar bears live in the High Arctic and spend most of their lives at and near the sea, hunting seals on ice floes, swimming and diving in the water. As they are usually found in very remote areas, the best way to see them is by boarding an expedition cruise to Greenland, Svalbard or the North Pole. You will be able to spot them from a safe distance from the spacious deck of your small expedition ship.
What time of year is best to see polar bears?
Polar bears do not hibernate, so technically you can see them year-round. Winter is prime time for them to hunt, when they stalk the sea ice to wait for seals to appear in a breathing hole. A good time for observing them is the Arctic summer, when sea ice recedes enough for expedition ships to pass through the Arctic Ocean. Board our Polar bear tour in Svalbard to get prime opportunities to see these majestic bears.
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