Ghost shark vs Green Sea Turtle

Hydrolagus mitsukurii compared with Chelonia mydas

Key Differences

• Ghost shark is Near Threatened while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Ghost shark	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Holocephali (Holocephali)	Reptilia (Reptiles)
Order	Chimaeriformes (Chimaeriformes)	Testudines (Turtles & Tortoises)
Family	Chimaeridae	Cheloniidae (Sea Turtles)
Genus	Hydrolagus	Chelonia (Green Sea Turtles)
Species	Hydrolagus mitsukurii	Chelonia mydas

Evolutionary Relationship

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

Conservation Status

Ghost shark

NT — Near Threatened

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Ghost shark

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

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.