That guy reminds me a lot of the Atlantic Ghost Crabs that I would look for on the beaches in NJ when I was a kid. Perhaps you did the same thing, living where you do?
Ghost crabs live burrows in the sand that are above the water line. We'd go down to the beach early, before there were a lot of people there, and look for holes in the sand. Digging down, you would find a ghost crab in about 1 out of 4 or 5 holes.
I doubt if you could find very may ghost crabs today, since they run all that machinery along the beaches to clean them up after the tourists litter them.