Sally lightfoot crab (Grapsus grapsus) in the littoral of the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

grapus grapsus galapagos islands intertidal zone ocean waves rocky shore biodiversity marine life wildlife crustacean ecosystem colorful crab sea nature natural habitat coastal galapagos ecosystem endemic species aquatic seashore surf invertebrate tourism wildlife conservation south america vibrant colors ocean environment outdoor fauna rocky coast habitat intertidal habitat tidal pool scavenger crustaceans marine biodiversity rock formations ecological balance animal behavior sea creatures conservation efforts underwater world natural scenery marine conservation