Anemone Survival?

[Diana]

My anenome after 2 weeks shrunk up, bleached, lost all its tenatcles, and hid in a crack for 3 months. I thought it was a goner. Then one day it appeared, I "nursed" it back to health, and now several years later it has split many times and is in perfect health. I have no idea what happened or why, but all I know is anenomes are weird creatures and that they certianly can live a long time in a reef tank.