Bighead catshark vs Green Sea Turtle

Apristurus bucephalus compared with Chelonia mydas

Key Differences

• Bighead catshark is Data Deficient while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Bighead catshark	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Reptilia (Reptiles)
Order	Carcharhiniformes (Ground Sharks)	Testudines (Turtles & Tortoises)
Family	Scyliorhinidae	Cheloniidae (Sea Turtles)
Genus	Apristurus	Chelonia (Green Sea Turtles)
Species	Apristurus bucephalus	Chelonia mydas

Evolutionary Relationship

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

Conservation Status

Bighead catshark

DD — Data Deficient

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Bighead catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

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.

Bighead catshark

The Bighead catshark (Apristurus bucephalus) is a species in the genus Apristurus. Typically found in marine environments from coastal waters to deep ocean.

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.