Green Sea Turtle vs Northern Lamprey

Chelonia mydas compared with Ichthyomyzon unicuspis

Key Differences

• Green Sea Turtle is Endangered while Northern Lamprey is Least Concern.

Taxonomic Classification

Rank	Green Sea Turtle	Northern Lamprey
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	Reptilia (爬行纲)	Petromyzonti (七鳃鳗纲)
Order	Testudines (龟鳖目)	Petromyzontiformes (七鰓鰻目)
Family	Cheloniidae (Sea Turtles)	Petromyzontidae
Genus	Chelonia (Green Sea Turtles)	Ichthyomyzon
Species	Chelonia mydas	Ichthyomyzon unicuspis

Evolutionary Relationship

Green Sea Turtle and Northern Lamprey share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Northern Lamprey

LC — Least Concern

Physical Characteristics

Attribute	Green Sea Turtle	Northern Lamprey
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.

Northern Lamprey

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States.

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。