Big Finner vs slender facelina

Balaenoptera physalus compared with Facelina auriculata

Key Differences

Big Finner is Endangered while slender facelina is Vulnerable.

Taxonomic Classification

Rank	Big Finner	slender facelina
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Cetacea (Whales & Dolphins)	Nudibranchia (Nudibranchia)
Family	Balaenopteridae (Rorquals)	Facelinidae
Genus	Balaenoptera (Rorquals)	Facelina
Species	Balaenoptera physalus	Facelina auriculata

Evolutionary Relationship

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

View Kingdom: Animalia

Conservation Status

Big Finner

EN — Endangered

slender facelina

VU — Vulnerable

Physical Characteristics

Attribute	Big Finner	slender facelina
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.

slender facelina

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.