Polar bear vs

Ursus maritimus compared with Psilachnum inquilinum

Key Differences

Polar bear is Vulnerable while is Least Concern.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (Mammals)	Leotiomycetes (Leotiomycetes)
Order	Carnivora (Carnivorans)	Helotiales (Helotiales)
Family	Ursidae (Bears)	Pezizellaceae
Genus	Ursus (Bears)	Psilachnum
Species	Ursus maritimus	Psilachnum inquilinum

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

LC — Least Concern

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 Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Psilachnum inquilinum is a minute discomycete fungus producing tiny, pale, cup-shaped fruiting bodies on decaying herbaceous plant material, particularly old stems and leaves. It is found in moist, sheltered habitats across temperate Europe, where it contributes to the decomposition of plant debris. Its small size and specialized substrate make it inconspicuous and rarely collected.