San Andrés has a remarkable range of natural wonders and landscapes. You can explore the island's tropical mangrove forests and secluded lagoons, home to alligators, lizards, iguanas, and many species of local and migratory birds. See a blowhole at high tide, when a remarkable natural geyser forms to shoot water clear into the sky from a series of subterranean tunnels in the coral reef. The island is also a scuba diver's paradise; there are a variety of underwater environments where you can explore hidden caves, walls, cliffs, and sunken ships