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Keywords:Darwin, Ecuador, Evolution, Galapagos Archipelago, Galapagos Islands, Galapagos National Park, Grapsus grapsus, Pacific Ocean, Sally Lightfoot Crab, Sally Lightfoot Crab (Grapsus grapsus) in the surf, Santiago Island, South America, Spheniscus mendiculus, animals, archepelago, color image, endemic, endemism, exotic, geology, naturalist, nature, outdoors, photography, surf, travel, travel destination, unique, unusual, volcanic, volcano, wild, wildlife, wildlife behavior, wildlife viewing