We went for a walk on Arran last year, and horizontal rain ensued (imagine...). On the way back I was walking along the shore (I'm always last back, as I often just stop and stand still, waiting to see what's about), when I saw something moving on a rock quite a bit out to sea. I thought it was a bird, and it wasn't until I zoomed in on the photo I'd taken that I realised what it was. Many more pics were then taken!