Okay, I have a Bali Organe Spot Star. Is this kinda what you are talking about?
"On the underside, near the mouth, there is a white/cream-colored "sac" that looks like the star is maybe turning inside-out?"
It seems like mine does this every few days (maybe every day, but I don't see it). I was really worried about it, but it seemed fine later in the day every time this happened.
I've had mine for a few months now, and he seems to do that once in a while, and always be okay.
CAREFUL THOUGH: Mine also got banished to a smaller tank after he plowed all the way across a
Green Star Polyp colony, eating every last polyp.
Not exactly reef-safe... they like to eat
coral polyps.
