Do astrea lay eggs in cicular pattern?

[ILikeFish]

I've found 2 tight circular patterns of what look to be eggs? Would this be astrea? Mine have 2-tone shells as they appear be growing quite fast??

 

[TippyToeX]

That sounds more like nudibranch eggs. Looks like a bullseye?

 

[ILikeFish]

big white circlehtought it was a salt spot at first.