An April morning on the west coast of Islay, the dunes are still keeping Kilchoman beach in the shade while the sun rises and lights up the waves in Machir Bay. A small edge had built up in the sand during high tide, now crumbling away as the water recedes.

Where might it have come from? Islay? Elsewhere in Scotland? Ireland? Or even further afield? Driftwood on Kilchoman beach, pointing out to Machir Bay.