Bigeye thresher vs Circular Ear Shell

Alopias pelagicus compared with Haliotis cyclobates

Key Differences

• Bigeye thresher is Endangered while Circular Ear Shell is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Circular Ear Shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Chondrichthyes (Cartilaginous Fish)	Gastropoda (Gastropoda)
Order	Lamniformes (Mackerel Sharks)	Lepetellida (Lepetellida)
Family	Alopiidae	Haliotidae
Genus	Alopias	Haliotis
Species	Alopias pelagicus	Haliotis cyclobates

Evolutionary Relationship

Bigeye thresher and Circular Ear Shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

Circular Ear Shell

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Circular Ear Shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Circular Ear Shell

Habitat

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

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

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.