TheDad just told me about this shark that was caught on Flagler Beach in Florida.
6 years ago, we visited that beach. TheDad took Middle Sister and Big Brother swimming there. There are no lifeguards. He had just gotten the kids out of the water and was giving them something to drink and helping them dry off, when he saw the fin–and, farther back, the tail. Needless to say, that was the end of the swim.