- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°29'13"N 5°7'42"W
- Eastings/Northings: 217734, 959668
- OS Grid: NC177596
- Mapcode Local: GBR F6Q9.7NB
- Mapcode Global: WH15M.6Y45
Location and coordinates are for the approximate centre of Seana Sgeir within this administrative area.
Geographic features and populated places may cross administrative borders.