Turtles can live for hundreds of years, slowly watching as time passes, alternate years, decades, centuries ... A turtle in the Calcutta zoo lived to 250 years! This amazing ability is due to the fact that the internal organs of turtles do not wear out with age and continue to function as effectively as in his youth. Therefore, the turtle can never die of old age.
Turtles die of disease, starvation or kill predators, but they do not take years. If you want the secret of immortality, it is in front of you - you just need to be a turtle. Unless, of course, you want the rest (and very long) life to crawl under the shell.