Snail or something else? ID help please

[drfu]

I have found a new creature in my reef and am wondering if its "Friend or Foe"? It moves like a snail, seems to have little antennas but it looks soft and mushy, no shell, what could this be, i would say its about 1/2" long. These are the best pictures i could take before it went back into the rock.



Thanks in advance for all of your help.

 

[nelix10]

Stoma snail I think! I have one it will develope a shell I believe! It is friendly!

 

[bribo12]

Stomatella varia, a stomatella snail. Beneficial

 

[drfu]

Stoma snail I think! I have one it will develope a shell I believe! It is friendly!

Cool, thx

 

[drfu]

Stomatella varia, a stomatella snail. Beneficial

Thanks!