Fishing on the beach in southern florida. In the fall schools of finger mullet migrate south followed by every preadetor in the ocean. I would wade out within reach with light tackle and catch some big snook. Usualy stayed out of the schools because of the sharks but got to having on of those days where you catch something every other cast and wasn' t paying attention got into the school. I felt something bump my leg didn' t hurt at first then it started to sting so I waded in to check and had six evenly spaced slices on my knee. don' t know if it was a shark or barracuda but I paid a lot more attention from then on.