Fraser's dolphin vs sei whale

Lagenodelphis hosei compared with Balaenoptera borealis

Key Differences

• Fraser's dolphin is Least Concern while sei whale is Endangered.

Taxonomic Classification

Rank	Fraser's 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	Lagenodelphis	Balaenoptera (Rorquals)
Species	Lagenodelphis hosei	Balaenoptera borealis

Evolutionary Relationship

Fraser's dolphin and sei whale share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

Fraser's dolphin

LC — Least Concern

sei whale

EN — Endangered

Physical Characteristics

Attribute	Fraser's dolphin	sei whale
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fraser's dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (Norway, Portugal), and South America (Colombia, Ecuador, 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 5 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway 🇵🇹 Portugal 🇹🇼 Taiwan