Alright, I got home late and spent an hour (one hour!) trying to get one of my snails to move to a spot where I could take a picture. (Okay, I realize that this makes it sound as if I really have no life. Let me clarify -- I kept checking on the snail as I was doing other things, like reading the gossip web sites...)
Anyhow, one of my snails has this big long algae strand attached to the top of its shell. It makes sense, I guess, since it can't reach back there to clean. With the bright green algae floating in the water, the snail looks like it's trying to imitate one of those troll dolls.
However, my attempts to get a picture were an epic failure. So I've improvised.
This is exactly what it looks like:
Don't hate me because I'm such a talented artist...