I can't imagine a single limpet doing much damage. They're so slow, and possibly confused.

I have a keyhole in my fuge. I don't know where he came from, but I can always find him. For the last few months, he has been in the same 3 square inch area. That spot is super clean.

I enjoy his presence, but if I can figure out how to get him off the glass I'd donate him to the hydroid cause. He has a death-grip suction, though, so I'm not sure how to go about removing him from the back glass. Any ideas?