Arnoux's beaked whale vs Common Seahorse

Berardius arnuxii compared with Hippocampus kuda

Key Differences

• Arnoux's beaked whale is Least Concern while Common Seahorse is Vulnerable.

Taxonomic Classification

Rank	Arnoux's beaked whale	Common Seahorse
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)	Actinopterygii (Ray-finned Fish)
Order	Cetacea (Whales & Dolphins)	Perciformes (ペルカ目)
Family	Hyperoodontidae	Pomacentridae (Clownfish & Damselfish)
Genus	Berardius	Amphiprion (Clownfish)
Species	Berardius arnuxii	Hippocampus kuda

Evolutionary Relationship

Arnoux's beaked whale and Common Seahorse share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Arnoux's beaked whale

LC — Least Concern

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	Arnoux's beaked whale	Common Seahorse
Diet	—	Carnivore
Average Lifespan	—	5 years
Average Length	—	17 cm
Average Weight	—	10 g

Habitat & Geographic Range

Arnoux's beaked whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Seahorse

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 7 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, India, Indonesia, Japan, and Philippines. Currently classified as Vulnerable 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.

Common Seahorse

タツノオトシゴ（Hippocampus kuda）は熱帯および温帯の海域に分布する。オスが子を育てて出産するという独特な繁殖形態で知られる。