Species · GBIF taxon 7970075
Suminoe Oyster
Magallana ariakensisAlso known as Ariake Oyster, Asian Oyster, Ariake-gaki
Suminoe oysters are large, fast-growing bivalves that form dense, complex reef structures in warm, muddy estuaries. They act as critical ecosystem engineers, filtering massive volumes of water daily to improve clarity and providing habitat for countless small marine organisms. Their flat, elongated shells adapt remarkably well to low-salinity environments where other oyster species struggle to survive.
Filter FeederReef BuilderEstuarine

Licensed referenceJames H / CC BY 4.0 · CC BY 4.0
- diet
- Phytoplankton, suspended microalgae, and organic detritus filtered from the water column.
- family
- Ostreidae
- threats
- Siltation, coastal development, water pollution, and ocean acidification.
- life Span
- 10 to 15 years
NE
Safe to observe at a normal distance.
- Watch your step: Walk carefully on exposed reefs as the shell edges are razor-sharp.
- Observe water clarity: Look for cleaner water downstream of active oyster beds, showcasing their filtration power.
- Check local regulations: Avoid harvesting wild oysters without permits due to conservation and health rules.
