Common Blue vs Green Sea Turtle

Polyommatus icarus compared with Chelonia mydas

Key Differences

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

Taxonomic Classification

Rank	Common Blue	Green Sea Turtle
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Arthropoda (节肢动物门)	Chordata (脊索动物门)
Class	Insecta (昆蟲綱)	Reptilia (爬行纲)
Order	Lepidoptera (鱗翅目)	Testudines (龟鳖目)
Family	Lycaenidae	Cheloniidae (Sea Turtles)
Genus	Polyommatus	Chelonia (Green Sea Turtles)
Species	Polyommatus icarus	Chelonia mydas

Evolutionary Relationship

Common Blue and Green Sea Turtle share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Common Blue

LC — Least Concern

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Common Blue

Habitat

Inhabits Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Widely distributed across Asia (Cyprus), Europe (40 countries), and North America (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 Blue

普通眼灰蝶（Polyommatus icarus）在IUCN红色名录中被列为无危（LC）。分布广泛，数量丰富，种群稳定，无迫切的保护关切。

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。