Commerson s Dolphin vs

Cephalorhynchus commersonii compared with Nostoc sphaericum

Key Differences

• Commerson s Dolphin is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Commerson s Dolphin
Kingdom	Animalia (動物)	Bacteria (Bacteria)
Phylum	Chordata (脊索動物)	Cyanobacteria (藍藻)
Class	Mammalia (哺乳類)	Cyanobacteriia
Order	Cetacea (Whales & Dolphins)	Cyanobacteriales
Family	Delphinidae (Oceanic Dolphins)	Nostocaceae
Genus	Cephalorhynchus	Nostoc
Species	Cephalorhynchus commersonii	Nostoc sphaericum

Conservation Status

Commerson s Dolphin

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Commerson s Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Commerson s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

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.

Nostoc sphaerica は、Nostocaceae科に属するコロニー形成性の窒素固定シアノバクテリアで、肉眼で見えるゼラチン状の球形または不規則なコロニーを形成する。湿った土壌、岩石、淡水環境に生息し、降雨後に目立つ塊を形成する。