Only visible at low tide (and when not covered by the ever shifting sand), a few rocks on Kilchoman beach covered with mussels clinging on to them.
Mussels on rocks on Kilchoman beach, Isle of Islay
Islay Pictures Photoblog
Pictures from the Isle of Islay, Scotland
Those are actually limpets…. patella vulgata….. a lot less good eating a bit like chewing a squash ball, I doubt even a splash of Sanaig could make them desirable.