vs Polar bear

Natronorubrum tibetense compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Archaea (Archaea)	Animalia (Animals)
Phylum	Halobacteriota (Halobacteriota)	Chordata (Chordates)
Class	Halobacteria (Halobacteria)	Mammalia (Mammals)
Order	Halobacteriales (Halobacteriales)	Carnivora (Carnivorans)
Family	Natrialbaceae	Ursidae (Bears)
Genus	Natronorubrum	Ursus (Bears)
Species	Natronorubrum tibetense	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.

Natronorubrum tibetense is a halophilic, alkaliphilic archaeon in the family Natrialbaceae, originally isolated from soda lakes on the Tibetan Plateau. It thrives in highly saline and alkaline environments and produces carotenoid pigments giving colonies a red to orange colouration. Its conservation status is not evaluated.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.