Black Hagfish vs Green Sea Turtle

Eptatretus deani compared with Chelonia mydas

Key Differences

• Black Hagfish is Data Deficient while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Black Hagfish	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Myxini (Myxini)	Reptilia (Reptiles)
Order	Myxiniformes (Myxiniformes)	Testudines (Turtles & Tortoises)
Family	Myxinidae	Cheloniidae (Sea Turtles)
Genus	Eptatretus	Chelonia (Green Sea Turtles)
Species	Eptatretus deani	Chelonia mydas

Evolutionary Relationship

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

Conservation Status

Black Hagfish

DD — Data Deficient

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Black Hagfish

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.

Black Hagfish

The Black Hagfish (Eptatretus deani) is a species in the genus Eptatretus. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment.

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.