Birdbeak dogfish vs Green Sea Turtle

Deania calcea compared with Chelonia mydas

Key Differences

• Birdbeak dogfish is Near Threatened while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Birdbeak dogfish	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Reptilia (Reptiles)
Order	Squaliformes (Squaliformes)	Testudines (Turtles & Tortoises)
Family	Centrophoridae	Cheloniidae (Sea Turtles)
Genus	Deania	Chelonia (Green Sea Turtles)
Species	Deania calcea	Chelonia mydas

Evolutionary Relationship

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

Conservation Status

Birdbeak dogfish

NT — Near Threatened

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Birdbeak dogfish

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Chile, Norway, and 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.

Birdbeak dogfish

The Birdbeak dogfish (Deania calcea) is a species in the genus Deania. It is currently classified as Near Threatened on the IUCN Red List. Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

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.