The Galápagos Islands, located roughly 600 miles off the coast of Ecuador, remained a closely guarded natural secret for millions of years. Over that time, the archipelago evolved into a home for an all-star cast of plants and animals. Sometime in the 1800s, some swashbuckling pirates and intrepid explorers started arriving in the Galápagos Islands. The most famous early visitor was Charles Darwin, a young naturalist who spent 19 days studying the islands' flora and fauna in 1835. In 1859
