Big Finner vs Black arion

Balaenoptera physalus compared with Arion ater

Key Differences

• Big Finner is Endangered while Black arion is Not Evaluated.

Taxonomic Classification

Rank	Big Finner	Black arion
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Cetacea (Whales & Dolphins)	Stylommatophora (Stylommatophora)
Family	Balaenopteridae (Rorquals)	Arionidae
Genus	Balaenoptera (Rorquals)	Arion
Species	Balaenoptera physalus	Arion ater

Evolutionary Relationship

Big Finner and Black arion share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Big Finner

EN — Endangered

Black arion

NE — Not Evaluated

Physical Characteristics

Attribute	Big Finner	Black arion
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Finner

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Black arion

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Denmark, Norway, Sweden, and United States.

Big Finner

Big Finner (Balaenoptera physalus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Black arion

The Black arion (Arion ater) is a species in the genus Arion. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden