i have a large piece of live rock and im assuming that they are Zoa's (but could be Palys) because of the little 'bumps" when they are closed .. well my tank was not doing so good for a few months and i lost alot of stuff.. i finally got it back together and its flourishing again and all of a sudden those "bumps" on that LR opened up and they are white.. I mean WHITE... bunch of little ones together like zoa's...
Is it possible that they bleached out?
Do Zoa's even bleach out?
i've gone online and cant find anything..