Ghost Crab
Unfortunately, only the one picture, but there is a good bit of detail on what is visible! The crab’s legs have long bristles of hair which I assume help it in some way in dealing with the sand?
Very sand-colored, these crabs camouflage well and dart across the beach quite quickly, then scurry and hide in their burrows.
Also, it’s kind of an ominous image too, right? Like this is a creature waiting in ambush about to rush out and attack!