vs Polar bear

Haloterrigena thermotolerans compared with Ursus maritimus

Key Differences

is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Archaea (Archaea)	Animalia (สัตว์)
Phylum	Halobacteriota (Halobacteriota)	Chordata (สัตว์มีแกนสันหลัง)
Class	Halobacteria (Halobacteria)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Halobacteriales (Halobacteriales)	Carnivora (สัตว์กินเนื้อ)
Family	Natrialbaceae	Ursidae (Bears)
Genus	Haloterrigena	Ursus (Bears)
Species	Haloterrigena thermotolerans	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.

Haloterrigena thermotolerans is an extremely halophilic and thermotolerant archaeon capable of growth at both high salt concentrations and elevated temperatures. It inhabits saline, warm terrestrial environments including salt crusts, saline springs, and thermally influenced hypersaline habitats. This aerobic chemoheterotroph is adapted to the dual stresses of high salinity and heat.

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.