There are great colonies of these Fiddler Crabs and the fun is picking out one and watching him/her for a few minutes. The one in the middle of the photo with the giant claw was picking up the one to his left and front and waving him around. Obviously a territorial or mating ritual, or perhaps just a crab mosh pit.
NIKON CORPORATION NIKON D300, f/8 @ 600 mm, 1/1250, ISO 500, No Flash
copyright by greg stephens and greg stephens photography