Please identify snail?

gman08016

Member
Like to know what these things are called.I notice they only come out at night.They look like a snail with a small pearl shell on top.Tank is less then a year old.They don't look like they mess with my corals yet.They are starting to multiply pretty good.Sorry for the blurry pic pretty lame cameraman

 
A

azul1994

Guest
If you could get a less blury pic, it would be alot easier to identify.
 
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