Still haven’t finished the writing I’ve been working on, so you’re stuck with another photograph. This is an Atlantic Horseshoe Crab (Limulus polyphemus) partially buried in the sand of the Long Pasture Audubon sanctuary on Cape Cod. There are Atlantic Slipper Shells (Crepidula fornicata) attached to the top of the shell. This may have been a molted exoskeleton, but it appeared to be a living horseshoe crab that had partially buried itself in the tidal flats at low tide; I decided not to poke at it to see if it was alive.