Big eye thresher shark vs Chalky Macoma

Alopias superciliosus compared with Macoma calcarea

Key Differences

• Big eye thresher shark is Vulnerable while Chalky Macoma is Least Concern.

Taxonomic Classification

Rank	Big eye thresher shark	Chalky Macoma
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Chondrichthyes (Cartilaginous Fish)	Bivalvia (Bivalvia)
Order	Lamniformes (Mackerel Sharks)	Cardiida (Cardiida)
Family	Alopiidae	Tellinidae
Genus	Alopias	Macoma
Species	Alopias superciliosus	Macoma calcarea

Evolutionary Relationship

Big eye thresher shark and Chalky Macoma share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Big eye thresher shark

VU — Vulnerable

Chalky Macoma

LC — Least Concern

Physical Characteristics

Attribute	Big eye thresher shark	Chalky Macoma
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big eye thresher shark

Habitat

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

Range

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

Chalky Macoma

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Big eye thresher shark

The Big eye thresher shark (Alopias superciliosus) is a species in the genus Alopias. It is currently classified as Vulnerable on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Chalky Macoma

The Chalky Macoma (Macoma calcarea) is a species in the genus Macoma. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.