Polar bear vs サラサフジツボ

Ursus maritimus compared with Amphibalanus reticulatus

Key Differences

Polar bear is Vulnerable while サラサフジツボ is Not Evaluated.

Taxonomic Classification

Rank	Polar bear	サラサフジツボ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Arthropoda (節足動物)
Class	Mammalia (哺乳類)	Maxillopoda (顎脚綱)
Order	Carnivora (ネコ目)	Sessilia (無柄目)
Family	Ursidae (Bears)	Balanidae
Genus	Ursus (Bears)	Amphibalanus
Species	Ursus maritimus	Amphibalanus reticulatus

Evolutionary Relationship

Polar bear and サラサフジツボ share a common ancestor at the Kingdom level: Animalia. (動物)

表示 Kingdom: Animalia

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

サラサフジツボ

NE — Not Evaluated

Physical Characteristics

Attribute	Polar bear	サラサフジツボ
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.

サラサフジツボ

Habitat

Native to Africa and Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (Gambia, Nigeria, Sierra Leone), Asia (Israel, Taiwan), Europe (Belgium, France, Sweden), North America (4 countries), Oceania and the Pacific (Australia, Samoa), and South America (Brazil).

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。