Galapagos is one of the most highly regulated examples of ecotourism around - the many cruise ships are kept to strict timetables and the numbers of people on the islands at any one time are restricted. But getting better quarantine facilities to keep out predators and diseases is on the wish list of many wanting to protect the islands from these threats.
Lynn Freeman joined the throng of visitors, and sibling guides Gil and Tui de Roy (pictured) who were born on the islands.
Gallery: The Galapagos