brown bear vs Green Sea Turtle

Ursus arctos compared with Chelonia mydas

Key Differences

brown bear is Extinct while Green Sea Turtle is Endangered.
brown bear is omnivore while Green Sea Turtle is herbivore.
Green Sea Turtle lives longer (80 years vs 25 years).

Taxonomic Classification

Rank	brown bear	Green Sea Turtle
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Reptilia (爬虫類)
Order	Carnivora (ネコ目)	Testudines (カメ)
Family	Ursidae (Bears)	Cheloniidae (Sea Turtles)
Genus	Ursus (Bears)	Chelonia (Green Sea Turtles)
Species	Ursus arctos	Chelonia mydas

Evolutionary Relationship

brown bear and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	brown bear	Green Sea Turtle
Diet	Omnivore	Herbivore
Average Lifespan	25 years	80 years
Average Length	2.0 m	1.2 m
Average Weight	300.0 kg	200.0 kg

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

Green Sea Turtle

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 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, Brazil, Costa Rica, Indonesia, and Mexico. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

brown bear

世界で最も広く分布するクマ科の種であるヒグマ（Ursus arctos）は、北アメリカとヨーロッパからロシアを経て日本まで、森林、ツンドラ、高山草原を占有します。成体はアラスカの沿岸個体群では最大700kgまで体重が増えることがあります。果物、根、魚、腐肉を食べる雑食動物で、ヒグマは景観全体に栄養素を分配するキーストーン種です。ほとんどの個体群は安定していますが、一部の亜種は脅威にさらされています。