Commerson s Dolphin vs Itomaki-ei

Cephalorhynchus commersonii compared with Mobula japanica

Key Differences

• Commerson s Dolphin is Least Concern while Itomaki-ei is Not Evaluated.

Taxonomic Classification

Rank	Commerson s Dolphin	Itomaki-ei
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Myliobatiformes (トビエイ目)
Family	Delphinidae (Oceanic Dolphins)	Myliobatidae
Genus	Cephalorhynchus	Mobula
Species	Cephalorhynchus commersonii	Mobula japanica

Evolutionary Relationship

Commerson s Dolphin and Itomaki-ei share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Commerson s Dolphin

LC — Least Concern

Itomaki-ei

NE — Not Evaluated

Physical Characteristics

Attribute	Commerson s Dolphin	Itomaki-ei
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Commerson s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Itomaki-ei

Habitat

Native to Asia and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Chile and Taiwan.

Commerson s Dolphin

<em>Cephalorhynchus commersonii</em>, commonly known as Commerson's Dolphin, is a small cetacean in the family Delphinidae. This species is classified as Least Concern on the IUCN Red List and is notable for its striking black-and-white coloration, which makes it one of the most visually distinctive dolphin species. Commerson's Dolphins typically inhabit coastal and nearshore marine environments of the Southern Hemisphere, particularly around the Falkland Islands, the southern tip of South America, and a geographically isolated population near the Kerguelen Islands in the Indian Ocean. These dolphins are highly social animals, often observed in small groups engaging in acrobatic behaviors near the surface. They typically feed on fish, squid, and crustaceans, often hunting cooperatively in shallow waters and kelp beds. Their average lifespan is approximately 18 years, and they are known for their fast, energetic swimming. Commerson's Dolphins are sometimes caught as bycatch in fishing nets, posing a localized conservation concern despite their overall Least Concern status.