Polar bear vs Tender Nesting Polypore

Ursus maritimus compared with Hapalopilus rutilans

Key Differences

• Polar bear is Vulnerable while Tender Nesting Polypore is Least Concern.

Taxonomic Classification

Rank	Polar bear	Tender Nesting Polypore
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Chordata (脊索动物门)	Basidiomycota (担子菌门)
Class	Mammalia (哺乳動物)	Agaricomycetes (傘菌綱)
Order	Carnivora (食肉目)	Polyporales (多孔菌目)
Family	Ursidae (Bears)	Phanerochaetaceae
Genus	Ursus (Bears)	Hapalopilus
Species	Ursus maritimus	Hapalopilus rutilans

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Tender Nesting Polypore

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	Tender Nesting Polypore
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.

Tender Nesting Polypore

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Sweden and United States.

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。