LMDAVE
Well-Known Member
I saw these tentacles sticking out of a piece of live rock in my new tank. If I move anything near it closes up in milli-seconds. From searching around is this the head of a feather duster worm? It reemerged a couple of time after closing up, in this vid (in the left middle of screen) you see it close up real fast when I touch the magnet cleaner.
