The oldest living things in the world, photographed SEP 30 2009
Rachel Sussman has travelled the world to take photographs of the oldest living things in the world. This is actinobacteria from Siberia; it's 400,000 years old.
The Hydrozoan species Turritopsis nutricula is capable of cycling from a mature adult stage to an immature polyp stage and back again. This means that there may be no natural limit to its life span.