Large-Neck Clam vs Soft-shelled clam

Mya arenaria compared with Mya truncata

Taxonomic Classification

Rank	Large-Neck Clam	Soft-shelled clam
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Mollusca (رخويات)	Mollusca (رخويات)
Class same	Bivalvia (ذوات الصدفتين)	Bivalvia (ذوات الصدفتين)
Order same	Myida (Myida)	Myida (Myida)
Family same	Myidae	Myidae
Genus same	Mya	Mya
Species	Mya arenaria	Mya truncata

Evolutionary Relationship

Large-Neck Clam and Soft-shelled clam share a common ancestor at the Genus level: Mya.

Conservation Status

Large-Neck Clam

VU — Vulnerable

Soft-shelled clam

VU — Vulnerable

Physical Characteristics

Attribute	Large-Neck Clam	Soft-shelled clam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Large-Neck Clam

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Georgia, Turkey), Europe (22 countries), and North America (Canada, United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Soft-shelled clam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Large-Neck Clam

Large-Neck Clam (Mya arenaria) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden