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).

The key lies in a process called transdifferentiation, where one type of cell is transformed into another type of cell. Some animals can undergo limited transdifferentiation and regenerate organs, such as salamanders, which can regrow limbs. Turritopsi nutricula, on the other hand, can regenerate its entire body over and over again. Researchers are studying the jellyfish to discover how it is able to reverse its aging process.

More info at :
http://en.wikipedia.org/wiki/Turritopsis_nutricula

too cool! that is one radical jelly.

(tnx)for the info..

Nice info bro

Good info

Interesting information. Should give you credit for sharing it with us.

thatz a very good effort.but my question is: can it survive on land? ofcourse NO.then it is mortal cos no creature is immortal except d Creator.

Nice topic really educating

I said POSSIBLE IMMORTAL. Its a water creature and it is supposed to stay in water.

What is it

Great topic

Wow.... Eternal youf 2 b grapped

enjoy am enjoyen my self 2

Cool info!

Wonders still exist

Can we transfer their genes to our genes So that we become immortal. Anyways nice topic

Nice info

I like the attachment.