Big eye chimaera vs Leatherback Sea Turtle

Hydrolagus macrophthalmus compared with Dermochelys coriacea

Key Differences

Big eye chimaera is Least Concern while Leatherback Sea Turtle is Vulnerable.

Taxonomic Classification

Rank	Big eye chimaera	Leatherback Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Holocephali (Holocephali)	Reptilia (Reptiles)
Order	Chimaeriformes (Chimaeriformes)	Testudines (Turtles & Tortoises)
Family	Chimaeridae	Cheloniidae (Sea Turtles)
Genus	Hydrolagus	Chelonia (Green Sea Turtles)
Species	Hydrolagus macrophthalmus	Dermochelys coriacea

Evolutionary Relationship

Big eye chimaera and Leatherback Sea Turtle share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Big eye chimaera

LC — Least Concern

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Big eye chimaera	Leatherback Sea Turtle
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	2.0 m
Average Weight	—	500.0 kg

Habitat & Geographic Range

Big eye chimaera

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.

Big eye chimaera

The Big eye chimaera (Hydrolagus macrophthalmus) is a species in the genus Hydrolagus. It is currently classified as Least Concern on the IUCN Red List. Native to South America, inhabiting ecosystems characteristic of the region.