Aw, what a lovely thought, Dips

You're obviously basing your opinion of them on how you feel about me
But actually, they probably
did have shells and they
did bring them in with them. Slugs are descended from snails (not the other way round, as you might think) and they have a vestigial shell under that thing that looks like a saddle on their back. It's just a thin plate, or in some cases just a mass of calcium carbonate grains, but it's there. It no longer serves any purpose at all, it just hasn't quite vanished yet - a fascinating example of evolution at work.
Aydin, who's one of the members of my malacology group, has a great picture of the shell of a
Limax, one of the best-known examples of this and possibly the slug Pee encountered, on his website here:
http://snailstales.blogspot.com/2009/02 ... ximus.html
So Pee, you discriminated against them unfairly
Alright, I'll shut up about slugs now.
These mountains that you are carrying, you were only supposed to climb.
Najwa Zebian