Terrible photo... way too much exposure suddenly. By the time I'd sorted it out, the crab had scuttled off! Anyway, this is as much as I could save the photo. However, the crab is carrying lots of eggs underneath, hence the effort to save the photo.
Dead. Skeleton only.
Thanks to Ondrej Radosta (Czechia) for ID.
I came across these 2 crabs in, perhaps, a mating process. The top crab was carrying the other one and scrambling across the sandy sea floor when I tried photographing them.
Big, colorful crab. I was with the son of the head marine biologist there, exploring the tide pools for little creatures, and we poked this crab with our sticks to observe its defensive reaction.