While at a Florida beach during spring break, we were surrounded by a type of ray. Caramel colored, 2-3 ft diameter, they were all over the place - mostly 3-25 feet from shore. They would dart and scatter a bit if we went toward them, but them return. A "local" called them a ray and said their tails don't have stingers. Now, back at home there are some guys who don't believe there is such a thing and think we were in "danger" of being stung. A little help here?