Cinnabar Oysterling vs Polar bear

Crepidotus cinnabarinus compared with Ursus maritimus

Taxonomic Classification

Rank	Cinnabar Oysterling	Polar bear
Kingdom	Fungi (菌界)	Animalia (動物)
Phylum	Basidiomycota (担子菌門)	Chordata (脊索動物)
Class	Agaricomycetes (真正担子菌綱)	Mammalia (哺乳類)
Order	Agaricales (ハラタケ目)	Carnivora (ネコ目)
Family	Crepidotaceae	Ursidae (Bears)
Genus	Crepidotus	Ursus (Bears)
Species	Crepidotus cinnabarinus	Ursus maritimus

Conservation Status

Cinnabar Oysterling

VU — Vulnerable

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cinnabar Oysterling	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Cinnabar Oysterling

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its 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.

Cinnabar Oysterling

Cinnabar oysterling (Crepidotus cinnabarinus) is a brightly colored bracket fungus in the family Crepidotaceae, found in Europe and North America, typically on dead deciduous wood including fallen logs, branches, and stumps in humid woodland settings. It is one of the more visually distinctive members of the genus, with vivid orange-red to cinnabar-red fruiting bodies—far more colorful than most Crepidotus species, which are typically pale and inconspicuous. The fruiting bodies are small, fan-shaped to kidney-shaped caps with a lateral attachment to the substrate, white gills that become pinkish-brown as spores mature, and no stalk. Crepidotus cinnabarinus is classified as Vulnerable, reflecting population declines associated with the loss of dead wood habitat in managed forests across Europe and parts of North America. Saproxylic fungi of this type depend on old-growth or mature woodland conditions with abundant coarse woody debris. Intensive forest management that removes deadwood and fallen logs significantly reduces habitat quality. The species is found in old-growth deciduous forest remnants and is an indicator of high conservation value woodland. Conservation measures include the retention of deadwood during forestry operations and the protection of ancient and veteran trees. Its striking coloration makes it a memorable indicator species for woodland ecologists.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。