Worm with tentacles? ID Please!

[intheend]

I found these things in my sandbed. Two of my zoa poyps were closed up and when I looked closely, I saw these tentacles on the frag rock that the zoos are on.

What are they?? And if they are bad, how do I remove them?

http://i253.photobucket.com/albums/hh42/sukitukibaby/008.jpg

[Octoberfest]

spaghetti worm

[intheend]

Thanks!! I appreciate your help.

Well, I'm glad they are good. But they are so disgusting to look at, lol.

[Sk8r]

Harmless, good tank cleaner. He's policing your zoas for you.

[will16]

Have tons fo them. No worries