While walking to the beach yesterday afternoon, I found two crabs that I think have a unique color like in this picture. The two of them played in the sand surrounded by rocks beside them. I used the camera to take a picture of this crab that looks like it's mating.
I'm trying to find a suitable name for this type of crab, I found on google, the name "plagusia depressa" is a bit similar to the color and pattern.
After taking several photos, I let these crabs back to live freely in their nature.