|Purple shore crab, Boundary Bay.|
This was a big crab, as shore crabs go, totally unafraid of me, not even bothering to threaten me as I prodded him into better light. Big enough to defend himself against anything on that beach, he's completely confident of his invulnerability. But watch out for gulls, Professor Plum; your weapons don't intimidate them!
Perhaps because of his size, I was also able to see the hinges on his legs and pincers; they're green, too.