Coral Parasite ID

I have this parasite that has been attacking my ORA Green Birds Nest frag. It has eaten part of the flesh exposing the coral's skeleton. I looks like some kind of tube worm. It has a greyish tube which it attaches substrate to. Has anyone seen this before?

 

hrmm lance it with a long needle.

 

+1 to the lance

Welcome to 3reef.

 

I did. I even crazy glued the holes shut. Next step is hot water.

 

There you go a little overkill never does you any harm.

 

Does anyone know what it is? Good thing is the damaged area of the coral grew back in a week.

 

I have no idea, we would need a macro shot to have a chance.