snail id?

[purplesprite]

does anyone know if these snails are ok to keep with corals?I have them in my tank and im starting to see more of them.
oh yea sorry bout the poor pic.

[Ram_Puppy]

I can't be for certain, but the bigger shell looks like a nassarius snail, in which case it is ok, does it burrow in the sand and stick up a siphon?

[Reef69]

..Snorkel.. :innocent