- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°56'33"N 4°33'52"W
- Eastings/Northings: 227771, 341424
- OS Grid: SH277414
- Mapcode Local: GBR 54.LMN6
- Mapcode Global: WH447.V9KK
Location and coordinates are for the approximate centre of Carreg Oysters within this administrative area.
Geographic features and populated places may cross administrative borders.