Among the most long-lived animals on planet Earth today are primarily a primitive species of jellyfish capable of regenerating themselves to the point of being considered, even, immortal.
Following closely behind are sea sponges and corals while among vertebrates are the shark, the Greenland whale and the orca Granny, all species that live, or have life expectancies, for as long as several hundred years.
In fact, the list of the longest-lived animals is quite long, but most of these animals are not very well known, partly because they are creatures we do not have to deal with. Let's find out which ten are the longest-lived.