PHOTO GALLERY OF FIDDLER CRABS

GIF of a crab raising and lowering one claw

"Male lemon-yellow clawed fiddler crab, waving his big claw in display" by Mnolf is licensed under CC BY-SA 3.0

Austruca perplexa male performing a vertical claw wave.

Crab with one enlarged claw

"Ring-legged Fiddler Crab (Uca annulipes)" by Bernard DUPONT is licensed under CC BY-SA 2.0

Austruca annulipes male with a prominent major claw.

Crab standing on sand

"Common Orange Fiddler Crab (Uca vocans) female" by Bernard DUPONT is licensed under CC BY-SA 2.0

Gelasimus vocans female with no enlarged claws.

Crab outside burrow in sand

"Fiddler crab outside it's burrow" by Alpha is licensed under CC BY-NC 2.0

Male fiddler crab outside burrow.

Two crabs standing on sand

"Ring-legged Fiddler Crabs (Uca annulipes) male and female" by Bernard DUPONT is licensed under CC BY-SA 2.0

Austruca annulipes pair, showcasing dimorphism.

Two crabs standing with one claw raised

"Photograph of Austruca mjoebergi males waving in synchrony" by Patricia Backwell is licensed under CC BY-NC 4.0

A pair of Austruca mjoebergi males waving in synchrony.