Green Sea Turtle vs Horn shark

Chelonia mydas compared with Heterodontus francisci

Key Differences

• Green Sea Turtle is Endangered while Horn shark is Data Deficient.

Taxonomic Classification

Rank	Green Sea Turtle	Horn shark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Reptilia (Reptiles)	Elasmobranchii
Order	Testudines (Turtles & Tortoises)	Heterodontiformes (Heterodontiformes)
Family	Cheloniidae (Sea Turtles)	Heterodontidae
Genus	Chelonia (Green Sea Turtles)	Heterodontus
Species	Chelonia mydas	Heterodontus francisci

Evolutionary Relationship

Green Sea Turtle and Horn shark share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Horn shark

DD — Data Deficient

Physical Characteristics

Attribute	Green Sea Turtle	Horn shark
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.

Horn shark

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.