Common Eider vs Giant Otter

Somateria mollissima compared with Pteronura brasiliensis

Key Differences

• Common Eider is Near Threatened while Giant Otter is Endangered.

Taxonomic Classification

Rank	Common Eider	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Carnivora (Carnivorans)
Family	Anatidae	Mustelidae (Weasels & Otters)
Genus	Somateria	Pteronura
Species	Somateria mollissima	Pteronura brasiliensis

Evolutionary Relationship

Common Eider and Giant Otter share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Eider

NT — Near Threatened

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Common Eider	Giant Otter
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.

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered 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.