Pladda by PrawnFM 05 on Flickr.

Pladda (Scottish Gaelic: Pladaigh) an uninhabited island 1 km off the south coast of the Isle of Arran in the Firth of Clyde not too far from it’s more famous neighbour, Ailsa Craig.

Pladda is a small, flat, teardrop-shaped island, less than a kilometre along its length and rising to just 27 metres (89 ft) above sea level. Unusual for such a small island it has its own source of fresh water.
Pladda shares its name with Pladda Island, a tiny islet situated in the Lynn of Lorn between Lismore and Ardmucknish Bay. There appears to have been a church or chapel on Pladda. John of Fordun and other chroniclers from 1400 to 1500 speak of the isle of St Blase of Pladda.
Nothing now remains to mark its site, and its whereabouts are unknown

Pladda Lighthouse, Pladda Island, by Isle of Arran, Aug 2015 by ALLAN MACIVER
Via Flickr:
A closer view of the lighthouse on Pladda you can also see the outhouses and the pier. The lighthouse appears to be surrounded by a stone dyke. The lighthouse was designed and engineered by Thomas Smith in 1790 and was one of the first erected lighthouses. I took this picture on full zoom the sun just came out fleetingly which helped a little to make it brighter.