Polar Bear
Ursus maritimus · Mammal, Vertebrate, Warm-blooded, Wild
Animal Family
Family Ursidae, order Carnivora, class Mammalia
Animal Category
Wild Predator, Marine Animal, Endangered Species
Breed / Variety
Polar Bear species (no distinct subspecies currently universally recognized, though genetic variations exist)
Conservation Status
Vulnerable according to the IUCN Red List. Population trend is decreasing. Major threats include climate change and loss of Arctic sea ice habitat, pollution, industrial encroachment, and human-wildlife conflict.
About This Creature
Large, powerful marine mammal with a bulky body, long neck, relatively small head, short rounded ears, and a black nose. Adult males weigh 350-700 kg and measure 2.4-3 meters long. Females are smaller, weighing 150-250 kg and measuring 1.8-2.4 meters. Fur appears white for camouflage in snow and ice, though individual hairs are actually transparent and hollow.
Physical Characteristics
Robust body structure adapted for cold climates, thick layer of blubber beneath black skin, dense water-repellent fur, large paws with non-retractable curved claws and partially webbed toes to aid in swimming and walking on ice, prominent shoulders, strong limbs.
Behavior & Temperament
Solitary animals except during mating season and females with cubs. Active day and night (cathemeral). Highly skilled swimmers, carnivorous hunters relying on stealth and patience. Communicate through vocalizations like growls, hisses, and roars, as well as scent markings.
Habitat & Diet
Origin Region
Circumpolar region of the Northern Hemisphere, largely within the Arctic Circle, including territories in Canada, Greenland, Russia, the United States (Alaska), and Norway.
Habitat
Tundra/Arctic, Ocean/Marine (sea ice); semi-aquatic and terrestrial
Diet & Nutrition
Hypercarnivore. Primary food source is ringed and bearded seals, relying heavily on seal blubber for high caloric intake. Also scavenges whale carcasses, and occasionally eats birds, eggs, vegetation, and small mammals when accessible.
Lifespan & Health
Lifespan is 15-18 years in the wild, though some live up to 25-30 years. Up to 30 years in captivity. Predators include humans and occasionally other polar bears or orcas. Females give birth to litters of 1-3 cubs every 3 years after a gestation period including delayed implantation.
Special Characteristics
Transparent, hollow guard hairs that scatter light, thick insulating blubber, black skin to absorb solar heat, exceptional sense of smell capable of detecting seals under meters of ice and snow. Highly dangerous to humans as top apex predators.
Ecological Information
Apex predator at the top of the Arctic marine food web. Regulates seal populations, influencing the wider marine ecosystem. Plays a critical role in nutrient distribution between marine and terrestrial environments.