Big Finner vs Small Adder's-Tongue

Balaenoptera physalus compared with Ophioglossum azoricum

Key Differences

Big Finner is Endangered while Small Adder's-Tongue is Critically Endangered.

Taxonomic Classification

Rank	Big Finner	Small Adder's-Tongue
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Polypodiopsida (Polypodiopsida)
Order	Cetacea (Whales & Dolphins)	Ophioglossales (Ophioglossales)
Family	Balaenopteridae (Rorquals)	Ophioglossaceae
Genus	Balaenoptera (Rorquals)	Ophioglossum
Species	Balaenoptera physalus	Ophioglossum azoricum

Conservation Status

Big Finner

EN — Endangered

Small Adder's-Tongue

CR — Critically Endangered

Physical Characteristics

Attribute	Big Finner	Small Adder's-Tongue
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.

Small Adder's-Tongue

Habitat

Inhabits boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Iceland, Norway, Portugal, and Sweden. Currently classified as Critically Endangered 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.