What is this?

[Dmsick]

I noticed this on my rock. I thought it could be a baby snail but it doesn't really look like any of my snails (ceriths, nerites or turbos).
Any one know?
Also the pic is pretty zoomed. It would fit on the tip of a finger.

 

[KJ]

Vermetid Snail.

 

[Dmsick]

Are they bad?

 

[KJ]

Are they bad?

Vermetid snail mucus cant cant irritate corals.

 

[Epic Aquaculture]

They are bad, and can get out of control. I recommend smashing it ASAP.

 

[Lovemyreef2015]

+1 on vermetid snail. You can super glue the opening to get rid of them.