Common Eider vs Northern Right Whale Dolphin

Somateria mollissima compared with Lissodelphis borealis

Key Differences

• Common Eider is Near Threatened while Northern Right Whale Dolphin is Least Concern.

Taxonomic Classification

Rank	Common Eider	Northern Right Whale Dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Cetacea (Whales & Dolphins)
Family	Anatidae	Delphinidae (Oceanic Dolphins)
Genus	Somateria	Lissodelphis
Species	Somateria mollissima	Lissodelphis borealis

Evolutionary Relationship

Common Eider and Northern Right Whale Dolphin share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Eider

NT — Near Threatened

Northern Right Whale Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Common Eider	Northern Right Whale Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

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.

Northern Right Whale Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.