vs Polar bear

Halorussus rarus compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Archaea (Archaea)	Animalia (动物界)
Phylum	Halobacteriota (Halobacteriota)	Chordata (脊索动物门)
Class	Halobacteria (盐杆菌纲)	Mammalia (哺乳動物)
Order	Halobacteriales (盐杆菌目)	Carnivora (食肉目)
Family	Haladaptataceae	Ursidae (Bears)
Genus	Halorussus	Ursus (Bears)
Species	Halorussus rarus	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

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.

Halorussus rarus 是从中国盐湖沉积物中分离的 Halobacteriaceae 科嗜盐古菌。标准检测中呈革兰氏阴性，多形性，最佳生长需要高氯化钠浓度。2008年建立的属代表适应于超盐分陆地环境的众多特化谱系之一。

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。