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 (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Reptilia (爬行纲)
Order	Carnivora (食肉目)	Testudines (龟鳖目)
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. (脊索动物门)

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

棕熊是世界上分布最广泛的熊类物种，从北美和欧洲横跨俄罗斯至日本，占据森林、冻原和高山草甸。阿拉斯加沿海种群的成年个体体重可达700公斤。棕熊是杂食性动物，以浆果、根茎、鱼类和腐肉为食，是跨景观分配养分的关键物种。大多数种群稳定，但部分亚种受到威胁。

Green Sea Turtle

绿海龟是最大的海龟之一。其名称源于软骨和脂肪的绿色，而非龟壳的颜色。