Common Periwinkle vs Green Sea Turtle

Littorina littorea compared with Chelonia mydas

Key Differences

• Common Periwinkle is Least Concern while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Common Periwinkle	Green Sea Turtle
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Gastropoda (腹足綱)	Reptilia (爬虫類)
Order	Littorinimorpha (タマキビガイ下目)	Testudines (カメ)
Family	Littorinidae	Cheloniidae (Sea Turtles)
Genus	Littorina	Chelonia (Green Sea Turtles)
Species	Littorina littorea	Chelonia mydas

Evolutionary Relationship

Common Periwinkle and Green Sea Turtle share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Common Periwinkle

LC — Least Concern

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Periwinkle	Green Sea Turtle
Diet	—	Herbivore
Average Lifespan	—	80 years
Average Length	—	1.2 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

Common Periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (4 countries) and North America (Canada, United States).

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.

Common Periwinkle

タマキビ（Littorina littorea）はIUCNレッドリストで軽度懸念（LC）に分類されている。分布域全体で広く生息し個体数は安定しており、早急な保全上の懸念はない。

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。