Small things on turbo snail

[Tethyis]

I recently bought my first turbo snail. Well today I found it dead and after inspecting it I found that part of its shell looked out of place. I was actually able to flick these areas off to find that they were actually little shelled critters of some sort. I have no clue what these are any help here? Are they dangerous to my tank?

http://i126.photobucket.com/albums/p108/Katjana13/Fish/Chuckys%20tank/DSC00001-3.jpg

closeup
http://i126.photobucket.com/albums/p108/Katjana13/Fish/Chuckys%20tank/DSC00008-2-1.jpg

[FeatherDuster]

You mean that white spiral thing on the bottom of the shell. Are you sure its not a Calcareous tubeworm? Calcareous tubeworms are harmless worm tube filter feeders.
Pic:
http://www.flickr.com/photos/jkirkhart35/439524310/

P.S.
These worms will attach to almost any hard surface. They will only attach to the outside and not in a harmful manner. A snail shell is a nice place to attach for them because they can filter feed through the water while the snail moves along.

[rxdoc_85]

yeah, my turbos are covered with those things, as is the back of the tank. they're harmless, not to worry.

[Tethyis]

Nono the picture is of the thing i pulled off the turbo snail. The whole reddish thing is what I'm referring to I didnt take a pic of the dead turbo snail, just the thing i picked off of it.

[lanimret]

Several of mine have those things too, I just assumed they were some kind of symbiotic crustacian. Never been able to remove any of them though.

[FeatherDuster]

Maybe a type of limpet? There is a little info on this page. I am sure a google search would help you even more.
http://www.wetwebmedia.com/snailidfaq2.htm

[Tethyis]

Yup thats what they are! Limpets. Google popped up a picture just like these guys...who became fish food shortly after I made the pics earlier :(