Please ID these eegs

[briangsxr1000]

I have been finding these on the frag plugs of some of my newer zoas. I pulled them out to dip them after seeing them not open occasionally. Any ideas?
I do remove them, but this is second time I have found them. Whatever it is seems to be a pest not a predator. I have not lost any zoas.

 

[titoav15]

Edit- was looking at something else on the plug... my bad

 

[titoav15]

Not too sure... could that be a form of a feather duster or a worm?

 

[titoav15]

if you are talking about the white things, if you got fine sand in your tank, thats just sand stuck togehter.

 

[briangsxr1000]

I am referring to the bunch you can see up center of plug near the top lip.

 

[titoav15]

I have seen that in my tank, and from my experience, that’s just sand stuck together. It is usually made by a clear looking worm creature that builds it. I am not too familiar with them, but that’s what I got out of it. IMO it is harmless HTH