What is this?

[GR00VY]

I woke up this morning to find this white small little oval on my glass. It is about 2-3mm if I had to guess. Any idea what it is?

Only thing in the tank are 2 clowns that have been in the tank for a few weeks and a newly add CUC from reef cleaners that was put in tank on Friday.

I have found 2 of them so far. They are on opposite ends of the tank.

Thanks

 

[Shootermcg]

Need to put a picture up if u could

 

[GR00VY]

Sorry thought I posted one.

 

[UCF Alum]

Some sort of snail

 

[Shootermcg]

It's hard to tell but I'd say snail to

 

[GR00VY]

They don’t move. Almost looks like an egg or something.

 

[reef lover]

Nerite snail egg