I have a feather duster in one of my pieces of live rock that I've had for 3 years. He's about one inch across and I was worried he was gone since I haven't seen it in two weeks . I was just feeding the biocube and noticed he is back out. He is my oldest surviving tank inhabitant, and lived through the power outage of Feb. 2010 that took out half my coral.
This is not the first time it has played the disappearing game and have the feeling it won't be the last. The first time he was missing, I actually found his crown and thought it was dead. I found out after he came back a few weeks later they can shed their crown if they are stressed. I had just rearranged the rocks in the tank and found the crown the next day. I'm not sure what caused this disappearance but he is back and I'm glad to see him again!
This is not the first time it has played the disappearing game and have the feeling it won't be the last. The first time he was missing, I actually found his crown and thought it was dead. I found out after he came back a few weeks later they can shed their crown if they are stressed. I had just rearranged the rocks in the tank and found the crown the next day. I'm not sure what caused this disappearance but he is back and I'm glad to see him again!