Circular Ear Shell vs Eurasian beaver

Haliotis cyclobates compared with Castor fiber

Key Differences

• Circular Ear Shell is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Circular Ear Shell	Eurasian beaver
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Gastropoda (腹足綱)	Mammalia (哺乳類)
Order	Lepetellida (Lepetellida)	Rodentia (ネズミ目)
Family	Haliotidae	Castoridae (Beavers)
Genus	Haliotis	Castor (Beavers)
Species	Haliotis cyclobates	Castor fiber

Evolutionary Relationship

Circular Ear Shell and Eurasian beaver share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Circular Ear Shell

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Circular Ear Shell	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Circular Ear Shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Circular Ear Shell

The Circular Ear Shell (Haliotis cyclobates) is a species in the genus Haliotis. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Eurasian beaver

ユーラシアビーバー（Castor fiber）はIUCNレッドリストで絶滅危惧II類（VU）に分類されています。個体群の減少と生息地への圧力の増大により、野生での絶滅危険度が高い状況に直面しています。