vs Polar bear

Ensifer saheli compared with Ursus maritimus

Key Differences

is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Bacteria (Bacteria)	Animalia (สัตว์)
Phylum	Proteobacteria (Proteobacteria)	Chordata (สัตว์มีแกนสันหลัง)
Class	Alphaproteobacteria (Alphaproteobacteria)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rhizobiales (Rhizobiales)	Carnivora (สัตว์กินเนื้อ)
Family	Rhizobiaceae	Ursidae (Bears)
Genus	Ensifer	Ursus (Bears)
Species	Ensifer saheli	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 Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

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.

Ensifer saheli is a nitrogen-fixing alphaproteobacterium in the family Rhizobiaceae, originally isolated from root nodules of Sesbania and Acacia legumes in Sahelian Africa. It forms effective symbioses with its legume hosts in nutrient-poor, semi-arid tropical soils, contributing to soil fertility in agriculturally marginal environments. Its name reflects its origin in the Sahel region.

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.