The Official Asylum Reef Tank Thread

Hey, what are the little string fingers called that come out of my live rock everywhere?

If they are more wormlike they are probable just borrowing worms that live in the rock and unroll like socks to eat detritus when it's quiet.

Sometimes it's good to trade some of your live rock in for new pieces just to get some new critters. You just have to be careful not to get any baddies. I have lots of bristle worms so I don't care about them, unless I find one by accident. Never seen a mantis shrimp, yet. I got a drilling snail once. It drilled holes in the shells of other mollusks to eat their insides.
I keep a flashlight and magnifier on the tank for exploring.