"Since it is capable of cycling from a mature adult stage to an immature polyp stage and back again, there may be no natural limit to its life span. Scientists say the hydrozoan jellyfish is the only known animal that can repeatedly turn back the hands of time and revert to its polyp state (its first stage of life)."
http://green.yahoo.com/blog/guest_bloggers/26/the-world-s-only-immortal-animal.html
I'd love that...turning from an old man to a young man again and again
http://green.yahoo.com/blog/guest_bloggers/26/the-world-s-only-immortal-animal.html
I'd love that...turning from an old man to a young man again and again