What type of snail is this?

[Pdandy]

About 20-30 of these came on my live rock. What kind of snail are they?

 

[cloak]

Collonista perhaps?

 

[saltyair]

lets hope they are not sundial snails - not good.

how big are they? could be collinista +1 cloak

 

[Pdandy]

They are less than 1/4". I looked up the colonists and they look like that I have.

 

[pagojoe]

The top one is a Collonista (or close relative) and the bottom one may be that, but it looks more like a Euchelus species. Neither of them are harmful.

Cheers,



Don