ID Help - Something on Zoas

[mfdrookie516]

I just found these on at least 3 polyps on this frag. Not on any other frags in the tank. I freaked out and instantly thought nudibranch, until I looked at pictures of them and compared. I have no clue what it is. It is visibly soft, as the current makes it move around a bit. I'm lost as to what it could be, and have no idea whether I need to worry about it or not. Any help would be appreciated.

 

[mfdrookie516]

I can say with certainty that it is not a solid mass. The flow has caused it to let go of itself and there are little tiny balls of whatever hanging by a thread. I'm wondering if this is eggs of some sort now.