Green Sea Turtle vs Japanese roughshark

Chelonia mydas compared with Oxynotus japonicus

Key Differences

• Green Sea Turtle is Endangered while Japanese roughshark is Vulnerable.

Taxonomic Classification

Rank	Green Sea Turtle	Japanese roughshark
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Reptilia (Reptilien)	Elasmobranchii
Order	Testudines (Schildkröten)	Squaliformes (Dornhaiartige)
Family	Cheloniidae (Sea Turtles)	Oxynotidae
Genus	Chelonia (Green Sea Turtles)	Oxynotus
Species	Chelonia mydas	Oxynotus japonicus

Evolutionary Relationship

Green Sea Turtle and Japanese roughshark share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Japanese roughshark

VU — Vulnerable

Physical Characteristics

Attribute	Green Sea Turtle	Japanese roughshark
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.

Japanese roughshark

Green Sea Turtle

The green sea turtle is one of the largest sea turtles. They are named for the green color of their cartilage and fat, not their shells.