ID Please

[israelnajar]

Are these snail eggs? Sorry about the quality of the photo. I just have a sony cybershot dsc-v1 and they are the best I can get.
http://i136.photobucket.com/albums/q187/israelnajar/DSC01063.jpg


Is this snail laying an egg?
http://i136.photobucket.com/albums/q187/israelnajar/DSC01076.jpg

[GreenUku]

It's hard to tell from the picture.

Do they look like this:

http://melevsreef.com/id/tbs/spirorbid_worms_tb.jpg

If so they are harmless feather duster type worms.

[israelnajar]

They look like this when they come break free from the constraints of the egg type thing. Again the best photo I could get and I tried for about 30 minutes changing settings on my camera to get this photo.

How would feather duster worms be laid on the glass?

http://i136.photobucket.com/albums/q187/israelnajar/DSC01125.jpg

[GreenUku]

Like a lot of invertebrate sea life, the feather duster worms go through a free floating/swimming plankton stage. I assume they just attach to the glass, rocks, etc. at the end of that stage of their developement.

Here's another link with these worms (Spirorbid):

http://www.reefsanctuary.com/forums/reef-hitchhiker-id/5139-feather-duster-worms.html

I've had a ton of these, though after a while they disappeared. Now they only seem to show up in my sump.

[israelnajar]

So the spirals are possibly spirorbid worms. And the first two photos are nerith snail eggs?

http://www.advancedaquarist.com/issues/sept2003/invert.htm

A good friend found that link for me.

[GreenUku]

Sounds like nerite eggs as well. I've never had nerites, but from that link you sent and this link it looks like it.

http://www.corallibrary.info/showphoto.php?photo=659&size=big&cat=537