Sometimes, you have to take a macro shot, close up, to see the big picture. I don’t imagine there’s a big story here: a crab walking at low tide, a gull snatches it up, drops it on the rocks below, and has a nice lunch. But how did this claw get here, at least thirty yards from the water? Where is the rest of him? Why here? You could ask yourself all these questions, or you could just snap a picture and move on.