Normal Saturday water change day. Also, did a little underwater gardening. Went well. Needed to do some things. A few hours later looking for the net to do some skimming. Noticed a shell on the floor. Oh, no it's my Large Mystery Snail. Mind you it's been 3 hours. Looked OK, put it back in the tank. I thought what a doofus, how did it happen. Maybe when I was netting out some debris I accidentally scooped it up. Still do not know. It's back in tank, doing its normal thing, Will be keeping an eye out for any noticeable changed behavior though. I just need to be more careful. Anybody else.