Hundreds of jellies in Florida

We have seen at least hundreds here in Vero Beach South, Fl, today, 9/13/15, between 6:30-7:30 p.m., EST, on the sand and in the water at the shorebreak. As we continued south, the beach turns to the east, and they lessened, drastically, and the tide began to come in. Then we turned back & only about 30% remained. Reported by A. Naegele