Here's some pic of a snail I found recently in my tank.

I've never seen one before & I'm not sure if it's harmful or not - it came off a button polyp colony I got 2 weeks ago & it seems to 'slime' things (including my beloved R. Yuma )

Can anyone let me know what it is? Should I get rid? etc.

Cheers.

You can see slime coming from it in the 1st pic.

From the pic it looks very much like a Heliacus sp snail.

These guys are coral munchers, they are known for eating zoanthids especially, although i'm not sure if they eat other corals too. I would get them out of your tank asap.

Agreed Heliacus Areola aka Sundail snail

http://www.thesea.org/reef_aquarium/pests/pests_snails.php

Thanks for that.

It does seem to be quite nasty according to that link.

It's outta there as soon as I find it again!

Get a torch and watch your tank at night as it will be easier to spot as coral polyps will be retracted.

Cheers Rob,

I've just done that & found it tucked up almost underneath the polyp rock, no doubt munching away.

He's now been dumped!

Thanks again for the help.