Bigeye dogfish vs Leatherback Sea Turtle

Squalus blainville compared with Dermochelys coriacea

Key Differences

Bigeye dogfish is Data Deficient while Leatherback Sea Turtle is Vulnerable.

Taxonomic Classification

Rank	Bigeye dogfish	Leatherback 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	Squalidae	Cheloniidae (Sea Turtles)
Genus	Squalus	Chelonia (Green Sea Turtles)
Species	Squalus blainville	Dermochelys coriacea

Evolutionary Relationship

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

View Phylum: Chordata

Conservation Status

Bigeye dogfish

DD — Data Deficient

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bigeye dogfish	Leatherback Sea Turtle
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	2.0 m
Average Weight	—	500.0 kg

Habitat & Geographic Range

Bigeye dogfish

Habitat

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

Range

Found in Chile.

Leatherback 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 5 distinct biome types spanning the Australasia and Indomalayan and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Costa Rica, Indonesia, Malaysia, and Trinidad and Tobago. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bigeye dogfish

The Bigeye dogfish (Squalus blainville) is a species in the genus Squalus. Native to South America, inhabiting ecosystems characteristic of the region.