Sally Lightfoot Crab (Grapsus grapsus) is common along the rocky western coasts of the Americas. This large species is particularly abundant on the Galápagos Islands, where the strikingly and variably colored animals can be seen on the black volcanic rocks in large numbers. It was a joy to watch the perfectly adapted crabs clinging to the rocks and fighting against the surf smashing down on them repeatedly, every few seconds. All photos were taken on the Galápagos in August 2012.
