I'm having a hard time believing it was a fish that did that to the girl's foot.  That's a very nasty injury.  Personally I don't skinny dip anymore for the reasons that Wally13 stated and I always wear water shoes when I swim.

I told the story on another board of my father's friend who was fishing out of a float tube dangling a shiny watch over the side.  A big northern grabbed onto his wrist and he ended up with 17 stitches.  He lost the watch also.  Good thing he wasn't far from help.