Snail-Looking Coral Hitchhiker.....Safe to Add to Aquarium?

[2AReefer92]

Hello Critter Experts,

I got several of these snail-looking critters on the zoas I purchased today. The shell is dome-shaped like a turtle and does not spiral. It appears they cannot go into the shell either. Also, the foot extends far past the back of the shell, like a long tail. The mouth looks just like a snail. I got the best pictures I could with my phone. (these guys are pretty small)

Any idea what these are? Can I put them in my tank or should I not risk it?

Thanks all!

 

[Not an IT guy]

They might be Stomatella snails. If they are harmless

 

[sfin52]

They might be Stomatella snails. If they are harmless

Thats what I was thinking.