Tiny white swirls...(not snail eggs)

So I've got tons of these little white swirl things all over. I would really like to know what they are and how to get rid of them.

Note: in the picture, they're yellow because these ones are dead. Ciuldnt get a good pic of the white ones, so pretend they're white please. : )

 

They are little hard shelled fan worms, harmless filter feeder. Bitch to get off without a scraper or something.

 

Yeah, I had them too. They went away on their own. A real pain in the dick to get off plastic pieces too.

 

So they're just ugly little bastards?

 

Aw. I loved mine. The back of my big tank was painted black and it reminded me of stars.

They're harmless.

 

I have them too. Spirorbid snails. They don't bother me.