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 (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Mollusca (軟体動物)
Class	Reptilia (爬虫類)	Bivalvia (二枚貝)
Order	Testudines (カメ)	Pectinida (イタヤガイ目)
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. (動物)

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

アオウミガメは最も大きなウミガメの一つです。甲羅ではなく軟骨と脂肪の緑色に由来して名付けられました。

St. James' shell

ホタテガイ(Pecten maximus)はIUCNレッドリストで軽度懸念(LC)に分類されています。分布域全体で広く生息し、個体数は安定しており、緊急の保全上の懸念はありません。