Worm in Zoas!!

[Magga Pie]

I have lots of zoas in my tank but this one rock with zoas on it use to open up everyday. Lately they dont open up only some of the colony.. I just saw a worm that looked like a centipede it had a long brown body and lots of legs...

What are these and would this be the reason why they havent opened up lately

Sorry no pic

 

[crvz]

yep, it sure could. or it could be a harmless bristleworm. without pictures, its impossible to tell. try to search out pictures of hitchhikers to see if you can recognize it somehow.