In these pictures, you can see a male flexing his large claw from under a log. A Mangrove Tree Crab can also be seen, for size comparison. I think this is the default fiddler crab for this Florida Gulf Coast mangrove habitat.
These two were sharing the same hole. I am assuming they are male and female. I will have to investigate this further. Input anyone?
San Diego County, California, US
A fiddler crab, sometimes known as a calling crab, may be any of approximately 97 species of semi-terrestrial marine crabs within the genus UcaÃ‚Â . Belonging to the family Ocypodidae, fiddler crabs are most closely related to the ghost crabs of the genus Ocypode. This crustacean is named for the fiddle-shaped large claw of the male crab. This entire group is composed of small crabs Ã¢â‚¬â€œ the largest being slightly over two inches across. Fiddler crabs are...