Atlantic Marsh Fiddler

Spotted this crab when it came out of its burrowing hole in the marsh grass. Identified due to its one over-sized claw.

Seen in the inter-tidal mud flats.

Fiddler crabs, presumably Uca pugnax based on dark carapace and yellowish chelae. Trail at Salt Marsh Nature Center, Marine Park, Brooklyn, NY, under green bridge.

Uca pugnax (Mud Fiddler Crab), under green bridge, trail at Salt Marsh Nature Center, Marine Park, Brooklyn, NY.

Uca pugnax. Under green bridge, trail at Salt Marsh Nature Center, Marine Park, Brooklyn, NY. Crabs with dark carapace and yellow claws. Four in left half of photo & three in right half but not large-clawed individual just right of center.