i have a hawaii feather duster that left his tube last night and moved down to the bottom of the tank and retreaved back into the rocks. so far appears to be alive, but my nassarius snails are lerking near by. and they attacked him before when he was still in the tube, so i had to put him up higher away from them. what is going on? i am going to do a water change tonight, but interesting thing is that i got him at the store where one of the feather dusters was out of the tube already, but i didn't think nothing of it, because i thought that he was stresing after shipping over to the store. i got this one about a week or so ago, and he was at the store for some time and the crown wasn't out all the way. now "not out all the way" is not an issue:huh: