What is THIS?? Blowing holes in Zoanthids!

[240gallons]

This cant be good... I cant see a body but noticed clear sweepers coming from a couple of colonies!

[dmh41532]

I have something similar in my tank came on a zoa frag. I think it's called a spionid worm.

[phillrodrigo]

Fresh water dip they should crawl out and pluck them off. I got a awesome flowerpot from blue zoo that came in with one and lost most of the coral