The Galapagos Islands are an archipelago located in the Pacific Ocean, about 600 miles west of Ecuador. Comprising 13 main islands and numerous smaller islets, they are known for their unique wildlife and diverse ecosystems. The islands were formed by volcanic activity and are home to many species that are not found anywhere else in the world. The Galapagos are famous for their role in the development of Charles Darwin's theory of evolution by natural selection. The islands' distinct flora and fauna, such as the Galapagos tortoise and marine iguana, have attracted scientists and nature enthusiasts alike, making them a UNESCO World Heritage site and a popular destination for eco-tourism.