Can you see the crab there?  Because of the incoming tide, I couldn’t get too close, but [s]he was crawling around on the corner of that mossy rock.  Yep, rock, way too big and craggy to be a stone.  And  Crabber seemed to be carrying something, but I couldn’t tell what it was.  Lunch, perhaps?

Crabby crab on craggy rock.  It works for me.