John Chan / Crenulated fiddler crab (Uca crenulata) waving its major claw at another crab, part of a courtship display, Southern California, USA, June.
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John Chan / Crenulated fiddler crab (Uca crenulata) feeding on detritus, Southern California, USA, June.
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Claudio Contreras / Mexican fiddler crab (Leptuca crenulata) small male displaying with larger individual behind, Morua Estuary, near Rocky Point (Puerto Peñasco), Gulf of California, Mexico, June.
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Claudio Contreras / Mexican fiddler crab (Leptuca crenulata) small male displaying with larger individual behind, Morua Estuary, near Rocky Point (Puerto Peñasco), Gulf of California, Mexico, June.
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Claudio Contreras / Mexican fiddler crab (Leptuca crenulata) small male displaying with larger individual behind, Morua Estuary, near Rocky Point (Puerto Peñasco), Gulf of California, Mexico, June.
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Claudio Contreras / Mexican fiddler crab (Leptuca crenulata) small male displaying with larger individual behind, Morua Estuary, near Rocky Point (Puerto Peñasco), Gulf of California, Mexico, June.
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Claudio Contreras / Mexican Fiddler Crab (Leptuca crenulata) male displaying, Morua Estuary, near Rocky Point, Gulf of California, Mexico, June.