Nearly a third of the endemic species within British territory are found on St Helena, according to research by the Royal Society for the Protection of Birds. That means creatures and plants found naturally in no other places in the world. St Helena is even richer than the Galapagos Islands when it comes to unique invertebrates. Protecting those species is a growing challenge for the government in Jamestown, with a new airport bringing increased threats to biosecurity. A plant or animal coming in from the outside world – or even a disease – could wipe out native species. Click on the images below to see pictures of some of St Helena’s natural treasures (not all of them endemics), courtesy of St Helena Government and various island photographers.