Leatherback Sea Turtle vs Nile Crocodile

Dermochelys coriacea compared with Crocodylus niloticus

Key Differences

• Leatherback Sea Turtle is Vulnerable while Nile Crocodile is Least Concern.
• Nile Crocodile lives longer (70 years vs 50 years).

Taxonomic Classification

Rank	Leatherback Sea Turtle	Nile Crocodile
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Reptilia (Reptiles)	Reptilia (Reptiles)
Order	Testudines (Turtles & Tortoises)	Crocodylia (Crocodilians)
Family	Cheloniidae (Sea Turtles)	Crocodylidae (Crocodiles)
Genus	Chelonia (Green Sea Turtles)	Crocodylus (True Crocodiles)
Species	Dermochelys coriacea	Crocodylus niloticus

Evolutionary Relationship

Leatherback Sea Turtle and Nile Crocodile share a common ancestor at the Class level: Reptilia. (Reptiles)

Conservation Status

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Leatherback Sea Turtle	Nile Crocodile
Diet	Carnivore	Carnivore
Average Lifespan	50 years	70 years
Average Length	2.0 m	5.0 m
Average Weight	500.0 kg	750.0 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.

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Egypt, Kenya, Madagascar, South Africa, and Tanzania.

Leatherback Sea Turtle

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

Nile Crocodile

The Nile crocodile is one of the largest reptiles in the world and is found throughout sub-Saharan Africa.