Leatherback Sea Turtle vs Swell shark

Dermochelys coriacea compared with Cephaloscyllium ventriosum

Key Differences

• Leatherback Sea Turtle is Vulnerable while Swell shark is Least Concern.

Taxonomic Classification

Rank	Leatherback Sea Turtle	Swell shark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Reptilia (Reptiles)	Chondrichthyes (Cartilaginous Fish)
Order	Testudines (Turtles & Tortoises)	Carcharhiniformes (Ground Sharks)
Family	Cheloniidae (Sea Turtles)	Scyliorhinidae
Genus	Chelonia (Green Sea Turtles)	Cephaloscyllium
Species	Dermochelys coriacea	Cephaloscyllium ventriosum

Evolutionary Relationship

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

Conservation Status

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Swell shark

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

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.

Swell shark

Habitat

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

Range

Found in Chile.

Leatherback Sea Turtle

The leatherback is the largest living turtle and the fourth-heaviest reptile. Unlike other turtles, it has a soft, leathery shell.