Big Finner vs Diatom

Balaenoptera physalus compared with Coscinodiscus wailesii

Key Differences

• Big Finner is Endangered while Diatom is Not Evaluated.

Taxonomic Classification

Rank	Big Finner	Diatom
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Ochrophyta (Ochrophyta)
Class	Mammalia (Mammals)	Bacillariophyceae (Bacillariophyceae)
Order	Cetacea (Whales & Dolphins)	Coscinodiscales (Coscinodiscales)
Family	Balaenopteridae (Rorquals)	Coscinodiscaceae
Genus	Balaenoptera (Rorquals)	Coscinodiscus
Species	Balaenoptera physalus	Coscinodiscus wailesii

Conservation Status

Big Finner

EN — Endangered

Diatom

NE — Not Evaluated

Physical Characteristics

Attribute	Big Finner	Diatom
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.

Diatom

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (10 countries), North America (Mexico, United States), and South America (Argentina, Brazil).

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.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan