In 2002, a tuatara named Henry by his caretakers underwent surgery to remove a tumor from his genitals and in 2009 at the age of 111 he mated for the first time with an eighty-year-old female named Mildred and had 11 baby tuatara. However, a team of marine scientists recently suggested that Leiopathes corals might be some of the longest-living species on the planet, after they found and examined a Leiopathes glaberrima that appeared to have a life span in excess of 4,500 years, which of course makes it one of the oldest-known marine organisms in the world. These organisms truly seem like they can live forever…but can they last longer than these 25 Most Indestructible Things Known To Man ?