Snail ID

[diverdown]

Found these in a tide pool this morning. I can't find them on line enywhere. Can anyone identify these little snails? Are they OK to introduce into my tank?
I'll attach a few pictures...
This is a large guy. Only got one of this type:

 

[diverdown]

here's another shot of him

 

[diverdown]

ooops

 

[diverdown]

same guy

 

[diverdown]

got lots of these. About 30 in various sizes. Anyone recognize them?
Any assistance is greatly appreciated

 

[lesa]

Green with envy Must be nice to just walk down there and pick up stuff

 

[michaeltx]

looks like nerite snails to me but not positive.
on a nother note I would be hesitant about adding things straight from the tide pools or beach there are some things that can be devastating to our tanks. not to mention the polution that is close to shore in most places.
Mike

 

[seaham358]

I dont remember what they are but I got 6 of them in a kit and they are great in my reef. Only trouble is they wree small and the crabs killed some at the start.