Castor vs Large-Neck Clam

Ricinus communis compared with Mya arenaria

Key Differences

• Castor is Not Evaluated while Large-Neck Clam is Vulnerable.

Taxonomic Classification

Rank	Castor	Large-Neck Clam
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Mollusca (軟体動物)
Class	Magnoliopsida (モクレン綱)	Bivalvia (二枚貝)
Order	Malpighiales (キントラノオ目)	Myida (Myida)
Family	Euphorbiaceae	Myidae
Genus	Ricinus	Mya
Species	Ricinus communis	Mya arenaria

Conservation Status

Castor

NE — Not Evaluated

Large-Neck Clam

VU — Vulnerable

Physical Characteristics

Attribute	Castor	Large-Neck Clam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Castor

Habitat

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

Range

Widely distributed across Africa (33 countries), Asia (26 countries), Europe (23 countries), North America (15 countries), Oceania and the Pacific (14 countries), and South America (12 countries).

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.

Castor

The Castor (Ricinus communis) is a species in the genus Ricinus. Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 7 distinct biome types. Populations are also found in montane and hi

Large-Neck Clam

ミゾハマグリ（Mya arenaria）はIUCNレッドリストで危急（VU）に分類されている。野生での絶滅リスクが高く、個体数が減少し、生息地への圧力が増加している。

Shared Countries

Both species can be found in 17 countries:

🇧🇪 Belgium 🇧🇬 Bulgaria 🇩🇰 Denmark 🇪🇪 Estonia 🇫🇷 France 🇬🇷 Greece 🇮🇹 Italy 🇱🇹 Lithuania 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇹 Portugal 🇷🇴 Romania 🇪🇸 Spain 🇸🇪 Sweden 🇹🇷 Turkey 🇬🇧 United Kingdom 🇺🇸 United States