- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°17'9"N 2°35'49"W
- Eastings/Northings: 363136, 710537
- OS Grid: NO631105
- Mapcode Local: GBR 2Z.7Y7D
- Mapcode Global: WH8TM.28KH
Location and coordinates are for the approximate centre of Mary's Skelly within this administrative area.
Geographic features and populated places may cross administrative borders.