Guiana Dolphin vs sei whale

Sotalia guianensis compared with Balaenoptera borealis

Key Differences

• Guiana Dolphin is Data Deficient while sei whale is Endangered.

Taxonomic Classification

Rank	Guiana Dolphin	sei whale
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Cetacea (Whales & Dolphins)	Cetacea (Whales & Dolphins)
Family	Delphinidae (Oceanic Dolphins)	Balaenopteridae (Rorquals)
Genus	Sotalia	Balaenoptera (Rorquals)
Species	Sotalia guianensis	Balaenoptera borealis

Evolutionary Relationship

Guiana Dolphin and sei whale share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

Guiana Dolphin

DD — Data Deficient

sei whale

EN — Endangered

Physical Characteristics

Attribute	Guiana Dolphin	sei whale
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Guiana Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

sei whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia