Guiana Dolphin vs River Tern

Sotalia guianensis compared with Sterna aurantia

Key Differences

• Guiana Dolphin is Data Deficient while River Tern is Vulnerable.

Taxonomic Classification

Rank	Guiana Dolphin	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Charadriiformes (Charadriiformes)
Family	Delphinidae (Oceanic Dolphins)	Laridae
Genus	Sotalia	Sterna
Species	Sotalia guianensis	Sterna aurantia

Evolutionary Relationship

Guiana Dolphin and River Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Guiana Dolphin

DD — Data Deficient

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Guiana Dolphin	River Tern
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.

River Tern

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.