"My anemone looks inverted – its mouth is inside out. What should I do?
This behavior is normally a sign of extreme stress and/or near death for the anemone
Assuming that your tank environment is perfect, the only thing you can do is wait to see
if your anemone can recover from whatever caused the stress in the first place.
Occasionally this behavior is caused when an anemone is first added to a new system and
when the anemone is not carefully and slowly acclimated. Hopefully the anemone will
recover from its shock and live on to thrive in your system."
page 20
http://www.carlosreef.com/download/fclick.php?1