sticky web

[ToastBurrito]

I keep finding a sticky weblike substance in my tank. I have no idea what it is or what is causing it. Is it harmful? I also caught a glimpse of a very fast small white thing. ( sorry its the best description I have at the moment) could the two be related?

 

[Fishy]

The webs may be from vermetid snails. Can you trace the web back to a little hard "stick" on the live rock? Vermetid snails are stationary and cast nets to eat which they can reel in.