Thanks to this little fella for letting me pick him up and reposition him several times - he was a good sport so I gave him a treat and plonked him on a juicy leaf in the front garden when I was finished.

Fascinating watching him though - look at his eye stalks, they have a black line inside the "sheath" of his outer skin layer.  When he comes out of his shell the most curious thing happens, that black line ascends from inside the snail's body and pops out of the end.  It's like his eyes are hidden inside!  Very cool.

I'm assuming he's a he by the way, I'm not proficient in sexing snails.