Common Eider vs Leatherback Sea Turtle

Somateria mollissima compared with Dermochelys coriacea

Key Differences

• Common Eider is Near Threatened while Leatherback Sea Turtle is Vulnerable.

Taxonomic Classification

Rank	Common Eider	Leatherback Sea Turtle
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Aves (kuş)	Reptilia (Sürüngenler)
Order	Anseriformes (Kazsılar)	Testudines (Kaplumbağa)
Family	Anatidae	Cheloniidae (Sea Turtles)
Genus	Somateria	Chelonia (Green Sea Turtles)
Species	Somateria mollissima	Dermochelys coriacea

Evolutionary Relationship

Common Eider and Leatherback Sea Turtle share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Conservation Status

Common Eider

NT — Near Threatened

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Common Eider

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (5 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Common Eider

Common Eider (Somateria mollissima) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Leatherback Sea Turtle

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