Can someone tell me what these are

I noticed this morning that there are alot of white spots on my glass and live rock. They have a kind of a swirl pattern to them. I wounder if they are baby snails. I do have 6 snails in my tank, I think they are azalea snails or something like that. I bought them to help control the brown algae that was on my live sand.

 

i think they are snails and you probably mean astrea snails

 

That's what the snails are called, Thanks saltwater guy.

 

no problem

 

The other ones look like they could be tiny feather dusters. They are safe.

 

good eye 2in10. You can barely see them in the picture and you're right, I have 2 baby feather dusters that showed up about 2 weeks ago and they are getting bigger.

 

are they baby snails or snail eggs? Do they move? I had snails that lay eggs that look like that on the glass. Hard to tell from your photo though.

 

I have them also. Are you sure they are snails or snail eggs? I have never had snails of any kind, and there are hundreds of them on the glass!! I'm gettin nervous!!

 

They're either this:

Spirorbid Worms

Harmless Filter feeder that will soon be everywhere.






or this:

Nerite snail eggs

 

Thank you clarky2120! That looks like them. Do I have to get rid of them? Are they eaten by anything?