Polar Bear

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Introduction1

Dictionary

polar bear : a large creamy-white carnivorous bear (Ursus maritimus synonym Thalarctos maritimus) that inhabits arctic regions — Webster

OneLook, Free Dictionary, Wiktionary

Encyclopedia

Polar bear (Ursus maritimus) is a hypercarnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is a large bear, approximately the same size as the omnivorous Kodiak bear (Ursus arctos middendorffi). A boar (adult male) weighs around 350–700 kg (772–1,543 lb), while a sow (adult female) is about half that size. Although it is the sister species of the brown bear, it has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow, ice and open water, and for hunting seals, which make up most of its diet. Although most polar bears are born on land, they spend most of their time on the sea ice. Their scientific name means “maritime bear” and derives from this fact. Polar bears hunt their preferred food of seals from the edge of sea ice, often living off fat reserves when no sea ice is present. Because of their dependence on the sea ice, polar bears are classified as marine mammals — Wikipedia

Encyclopædia Britannica

Search

WolframAlpha

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Preservation

Spectacular GoPro Footage Of Polar Bears Searching For Ice (Earth Porn)
Arctic Bear Productions

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

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Participation

Education

Course

OER Commons: Open Educational Resources

Community

News

Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

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More News …

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Increasing evidence that bears are not carnivores
    on October 3, 2022 at 10:49 am

    Bears are not cats or dogs, and feeding them like they are likely shortens their lives.

  • Scientists find link between fast-melting Arctic...
    on September 29, 2022 at 8:41 pm

    An international team of researchers have sounded new alarm bells about the changing chemistry of the western region of the Arctic Ocean after discovering acidity levels increasing three to four times faster than ocean waters elsewhere.

  • Receding ice leaves Canada's polar bears at...
    on September 29, 2022 at 8:18 am

    Sprawled on rocky ground far from sea ice, a lone Canadian polar bear sits under a dazzling sun, his white fur utterly useless as camouflage.

  • Using eyes in the sky to locate seals in a...
    on September 14, 2022 at 6:46 pm

    This summer, researchers managed to collect stunning drone images of both ringed seals and walruses. In one fjord, the St. Jonsfjorden, twelve ringed seals were found spread out throughout the fjord, resting on the fast ice. However, approaching and identifying these individuals is very challenging. Since ringed seals are hunted by polar bears, any mammal—either walking on four or two legs—will be avoided at all costs.

  • How a human rights approach to climate change can...
    on September 8, 2022 at 3:07 pm

    On Dec. 7, 2005, Canadian-born mother and grandmother Sheila Watt-Cloutier filed a 163-page petition with the Inter-American Commission on Human Rights arguing that the impacts of climate change violated the "fundamental human rights" of Indigenous Inuit people like her across the Arctic.

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial

Sphere Land, Ice, Water (Ocean), Air
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Life Cell, Gene, Tree of Life
Microorganism
Plant Flower, Tree
Animal
Invertebrate Cuttlefish, Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.