are known for their . Despite covering less than 1% of the Earth’s surface, they harbor more than 1/5 of mapped global species richness.
The Heritage sites are estimated to protect over 20,000 globally threatened species. Today, up to 1/3 of remaining elephants, tigers and pandas can be found in these sites, as well as at least 1 in 10 great apes, giraffes, lions and rhinos. For some species on the brink of extinction, UNESCO World Heritage sites have become the last line of defense. They are home to all remaining Javan rhinos, vaquitas (the world’s smallest cetacean) and pink iguanas, as well as more than half of all Sumatran rhinos, Sumatran orangutans and mountain gorillas.
However, biodiversity in UNESCO World Heritage sites is threatened by human pressures and climate change.