Blue Dolphin vs Giant Otter

Stenella coeruleoalba compared with Pteronura brasiliensis

Key Differences

• Blue Dolphin is Least Concern while Giant Otter is Endangered.

Taxonomic Classification

Rank	Blue Dolphin	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Carnivora (Carnivorans)
Family	Delphinidae (Oceanic Dolphins)	Mustelidae (Weasels & Otters)
Genus	Stenella	Pteronura
Species	Stenella coeruleoalba	Pteronura brasiliensis

Evolutionary Relationship

Blue Dolphin and Giant Otter share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Blue Dolphin

LC — Least Concern

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Blue Dolphin	Giant Otter
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela).

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Blue Dolphin

Blue Dolphin (Stenella coeruleoalba) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela