Green Sea Turtle vs St. James' shell

Chelonia mydas compared with Pecten maximus

Key Differences

• Green Sea Turtle is Endangered while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Green Sea Turtle	St. James' shell
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Mollusca (软体动物门)
Class	Reptilia (爬行纲)	Bivalvia (双壳纲)
Order	Testudines (龟鳖目)	Pectinida (扇贝目)
Family	Cheloniidae (Sea Turtles)	Pectinidae
Genus	Chelonia (Green Sea Turtles)	Pecten
Species	Chelonia mydas	Pecten maximus

Evolutionary Relationship

Green Sea Turtle and St. James' shell share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Green Sea Turtle	St. James' shell
Diet	Herbivore	—
Average Lifespan	80 years	—
Average Length	1.2 m	—
Average Weight	200.0 kg	—

Habitat & Geographic Range

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.

St. James' shell

Habitat

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

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

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。

St. James' shell

圣雅各贝（Pecten maximus）在IUCN红色名录中被列为无危（LC）。在其分布范围内广泛分布，种群数量稳定，没有直接的保护关切。