Polar bear vs

Ursus maritimus compared with Viridibacillus arenosi

Key Differences

Polar bear is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (حيوانات)	Bacteria (Bacteria)
Phylum	Chordata (حبليات)	Firmicutes (متينات الجدار)
Class	Mammalia (ثدييات)	Bacilli (عصيات)
Order	Carnivora (لواحم)	Bacillales_A
Family	Ursidae (Bears)	Planococcaceae
Genus	Ursus (Bears)	Viridibacillus
Species	Ursus maritimus	Viridibacillus arenosi

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 Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

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.

Viridibacillus arenosi is a spore-forming bacterium isolated from sandy soils, as its species name suggests. It forms characteristic oval endospores and is distinguished by its ability to grow in relatively nutrient-poor sandy substrates. This aerobic chemoheterotroph plays a role in organic matter decomposition in sandy terrestrial environments.