vs Polar bear

Acanthocorbis asymmetrica compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Protozoa (原生動物)	Animalia (动物界)
Phylum	Choanozoa (領鞭毛動物)	Chordata (脊索动物门)
Class	Choanoflagellatea (领鞭毛虫纲)	Mammalia (哺乳動物)
Order	Choanoflagellida (颌鞭目)	Carnivora (食肉目)
Family	Acanthoecidae	Ursidae (Bears)
Genus	Acanthocorbis	Ursus (Bears)
Species	Acanthocorbis asymmetrica	Ursus maritimus

Conservation Status

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

不对称棘篮虫（Acanthocorbis asymmetrica）是一种生活在沿海及开阔大洋水域的海洋领鞭毛虫，属于单细胞真核生物，与动物祖先关系密切。其细胞被一个由不对称排列的硅质肋条构成的外壳（篮笼状结构）所包裹，是区别于近缘种的显著特征。该物种以细菌为食，在海洋微生物食物网中扮演重要角色。

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway