Arnoux's beaked whale vs ナガスクジラ

Berardius arnuxii compared with Balaenoptera physalus

Key Differences

• Arnoux's beaked whale is Least Concern while ナガスクジラ is Endangered.

Taxonomic Classification

Rank	Arnoux's beaked whale	ナガスクジラ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order same	Cetacea (Whales & Dolphins)	Cetacea (Whales & Dolphins)
Family	Hyperoodontidae	Balaenopteridae (Rorquals)
Genus	Berardius	Balaenoptera (Rorquals)
Species	Berardius arnuxii	Balaenoptera physalus

Evolutionary Relationship

Arnoux's beaked whale and ナガスクジラ share a common ancestor at the Order level: Cetacea. (Whales & Dolphins)

Conservation Status

Arnoux's beaked whale

LC — Least Concern

ナガスクジラ

EN — Endangered

Physical Characteristics

Attribute	Arnoux's beaked whale	ナガスクジラ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arnoux's beaked whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

ナガスクジラ

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Arnoux's beaked whale

The Arnoux's beaked whale, Berardius arnuxii, is a species. It is currently assessed as least concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

ナガスクジラ

ナガスクジラ（Balaenoptera physalus）は、IUCNレッドリストで絶滅危惧種（EN）に分類されています。野生での絶滅リスクが高く、個体数の著しい減少と生存への継続的な脅威に直面しています。