Rolling around is not normal for a healthy one...I didnt metion in my earlier post be cause the pic it looks attached to the rocks. If an anemone does not attach then thats a sign of sickness as well as the ( what looks like in the first pic ) a gapeing mouth, as well as a whiteish color ( bleaching ). Sebaes need to be healthy when purchased, not dyed ( most yellow ones are ) and under strong lighting.