Crabs 2020 GALAPAGOS CRABS SALLY LIGHTFOOT CRAB GENOVESA The crabs change colors by molting their shells. … When sally lightfoot crabs hatch, they are black with small red spots. Each time they change their shell, the spots get bigger until the crab is eventually all red! Crab on the Rocks on the Beach Genovesa Crab on the Rocks on the Beach Genovesa Sally Lightfoot Crab on the Beach Genovesa Sally Lightfoot Crab on the Beach Genovesa Crab on the Beach Rabida Courtesy Jorge Pigann Male Fiddler Crab Battle These crabs are very small being less than an inch long Male Fiddler Crab Battle These crabs are very small being less than an inch long Genovesa Male Fiddler Crab Battle These crabs are very small being less than an inch long Genovesa Male Fiddler Crab Battle These crabs are very small being less than an inch long Genovesa Hermit Crab Rabida