Hmm.. Guess I should tag my camera..
"If found, please send the memory card with contents to: John Doe, L&F Road, 12345 Dumbass"
If I lose my camera, which I nearly did, the photos probably would piss me off the most as well :/
In my 14+ years of diving, this was the first piece of equipment I've lost. I'm still stunned as to how fast the camera disappeared. I've had it strapped to my wrist, yet the simple act of clearing my facemask in 25 feet of water resulted in the strap coming loose enough to silently slip off my wrist and the camera with it. Only took seconds to lose it.
In hindsight (like mistakes always are), I will most definitely be placing a tag in the camera with contact information. One never knows. Lesson learned for me!