Polar bear vs

Ursus maritimus compared with Trachelomonas helvetica

Key Differences

• Polar bear is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Protozoa (原生動物)
Phylum	Chordata (脊索动物门)	Euglenozoa (裸藻门)
Class	Mammalia (哺乳動物)	Euglenoidea (裸藻纲)
Order	Carnivora (食肉目)	Euglenida (裸藻目)
Family	Ursidae (Bears)	Euglenaceae
Genus	Ursus (Bears)	Trachelomonas
Species	Ursus maritimus	Trachelomonas helvetica

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

NE — Not Evaluated

Physical Characteristics

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

Habitat & Geographic Range

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.

Habitat

Native to Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, and Sweden.

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。

Trachelomonas helvetica是包裹在坚硬矿化壳体（壳状外壳）内的单细胞裸藻，见于欧洲及其他地区的淡水水塘、湖泊和缓流水域。种名反映了其在瑞士的发现地。与其他Trachelomonas种一样，可进行光合作用，并在壳体内利用鞭毛游动。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway