Polar bear vs Rafflesia

Ursus maritimus compared with Rafflesia arnoldii

Key Differences

Polar bear is Vulnerable while Rafflesia is Endangered.
Polar bear is carnivore while Rafflesia is parasite.
Polar bear is 40.9x heavier than Rafflesia.
Polar bear lives longer (25 years vs 5 years).

Taxonomic Classification

Rank	Polar bear	Rafflesia
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Mammalia (哺乳類)	Magnoliopsida (モクレン綱)
Order	Carnivora (ネコ目)	Rosales (バラ目)
Family	Ursidae (Bears)	Rosaceae (Rose Family)
Genus	Ursus (Bears)	Rosa (Roses)
Species	Ursus maritimus	Rafflesia arnoldii

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Rafflesia

EN — Endangered

Trend: Decreasing ↓

Physical Characteristics

Attribute	Polar bear	Rafflesia
Diet	Carnivore	Parasite
Average Lifespan	25 years	5 years
Average Length	2.4 m	1.0 m
Average Weight	450.0 kg	11.0 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.

Rafflesia

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Indonesia and Malaysia. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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。