Blue Dolphin vs Hourglass Dolphin

Stenella coeruleoalba compared with Lagenorhynchus cruciger

Taxonomic Classification

Rank	Blue Dolphin	Hourglass Dolphin
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 same	Delphinidae (Oceanic Dolphins)	Delphinidae (Oceanic Dolphins)
Genus	Stenella	Lagenorhynchus
Species	Stenella coeruleoalba	Lagenorhynchus cruciger

Evolutionary Relationship

Blue Dolphin and Hourglass Dolphin share a common ancestor at the Family level: Delphinidae. (Oceanic Dolphins)

Conservation Status

Blue Dolphin

LC — Least Concern

Hourglass Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Blue Dolphin	Hourglass Dolphin
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).

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.