Our #fiddlercraboftheweek is the Necklaced Fiddler Crab, Uca monilifera, found only in the northern half of the Gulf of California.
A very large #fiddlercrab, with a carapace between 4-5 cm in breadth, it is easy to identify by the unique powder blue color; the large body size and somewhat unusual shape of the claw also help distinguish it within the range.
https://www.fiddlercrab.info/u_monilifera.html
https://www.inaturalist.org/taxa/67461-Uca-monilifera