Subscribe: RSS Podcast iTunes
wikiofthedaymasto.ai
  Buy WotD Stuff!!
Episode 2488             Episode 2490
Episode 2489

Polar bear
Tue, 2024-Feb-27 01:04 UTC
Length - 3:00

Direct Link

Welcome to featured Wiki of the Day where we read the summary of the featured Wikipedia article every day.

The featured article for Tuesday, 27 February 2024 is Polar bear.

The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed. The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb). The species is sexually dimorphic, as adult females are much smaller. The polar bear is white- or yellowish-furred with black skin and a thick layer of fat. It is more slender than the brown bear, with a narrower skull, longer neck and lower shoulder hump. Its teeth are sharper and more adapted to cutting meat. The paws are large and allow the bear to walk on ice and paddle in the water.

Polar bears are both terrestrial and pagophilic (ice-living) and are considered to be marine mammals due to their dependence on marine ecosystems. They prefer the annual sea ice but live on land when the ice melts in the summer. They are mostly carnivorous and specialized for preying on seals, particularly ringed seals. Such prey is typically taken by ambush; the bear may stalk its prey on the ice or in the water, but also will stay at a breathing hole or ice edge to wait for prey to swim by. The bear primarily feeds on the seal's energy-rich blubber. Other prey include walruses, beluga whales and some terrestrial animals. Polar bears are usually solitary but can be found in groups when on land. During the breeding season, male bears guard females and defend them from rivals. Mothers give birth to cubs in maternity dens during the winter. Young stay with their mother for up to two and a half years.

The polar bear is considered to be a vulnerable species by the International Union for Conservation of Nature (IUCN) with an estimated total population of 22,000 to 31,000 individuals. Its biggest threats are climate change, pollution and energy development. Climate change has caused a decline in sea ice, giving the polar bear less access to its favoured prey and increasing the risk of malnutrition and starvation. Less sea ice also means that the bears must spend more time on land, increasing conflicts with people. Polar bears have been hunted, both by native and non-native peoples, for their coats, meat and other items. They have been kept in captivity in zoos and circuses and are prevalent in art, folklore, religion and modern culture.

This recording reflects the Wikipedia text as of 01:04 UTC on Tuesday, 27 February 2024.

For the full current version of the article, see Polar bear on Wikipedia.

This podcast uses content from Wikipedia under the Creative Commons Attribution-ShareAlike License.

Visit our archives at wikioftheday.com and subscribe to stay updated on new episodes.

Follow us on Mastodon at @wikioftheday@masto.ai.

Also check out Curmudgeon's Corner, a current events podcast.

Until next time, I'm Joanna Standard.

Archive
2017:MayJunJulAugSepOctNovDec
2018:JanFebMarAprMayJunJulAugSepOctNovDec
2019:JanFebMarAprMayJunJulAugSepOctNovDec
2020:JanFebMarAprMayJunJulAugSepOctNovDec
2021:JanFebMarAprMayJunJulAugSepOctNovDec
2022:JanFebMarAprMayJunJulAugSepOctNovDec
2023:JanFebMarAprMayJunJulAugSepOctNovDec
2024:JanFebMarAprMayJunJulAugSepOctNovDec

Most Recent Episodes


Feedback welcome at feedback@wikioftheday.com.

These podcasts are produced by Abulsme Productions based on Wikipedia content.

They are released under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

Creative Commons License

Abulsme Productions also produces Curmudgeon's Corner, a current events podcast.

If you like that sort of thing, check it out too!


Page cached at 2024-12-04 10:40:06 UTC
Original calculation time was 0.1909 seconds

Page displayed at 2024-12-05 00:18:16 UTC
Page generated in 0.0011 seconds