The island's seahorse shape is the product of the merging of six large volcanoes into a single landmass. On this island Gal�pagos Penguins, Flightless Cormorants, Marine Iguanas, pelicans and Sally Lightfoot crabs abound. At the skirts and calderas of the volcanos of Isabela, Land Iguanas and Gal�pagos Tortoises can be observed, as well as Darwin Finches, Gal�pagos Hawks, Gal�pagos Doves and very interesting lowland vegetation.