The known average age of lobsters is 60 years old. However, some of them can live more than 100 years. The oldest lobster that has ever caught was 140 years old.
4 Immortal jelly fish(Turritopsis nutricula):
immortal-jellyfish 10 Animals That Outlive People
Turritopsis nutricula is a type of jelly fish which is very small and it lives in the Mediterranean Sea. This kind of jelly fish is not only thought to live longer than people, but it is thought to be immortal. It is believed to be immortal because it was noticed that every time it reaches the adult stage it reverts back to a younger stage.