weird worm like things coming from rock

[kmartcwby]

Picture attached, what is this thing? I've counted about 6 or so.

 

[200 gallon reef]

It looks like a brittle star arm.

 

[cloudxsoldier]

yup i agree.
keep and eye on it and see if a few other legs come out at the same time.

I have one in my tank and he nearly comes all the way out at night. can see his centre point etc. shine a soft light on the rock at night and see if u can get a good look.

 

[kmartcwby]

Yeah I've been trying to see the rest, but all I see is the arms sticking out. Kind of hard to see in that rock, but I'll keep trying!