BOTH UNITS WERE TRAVELING NORTH ON THE ICW. UNIT 1 SAW A SOUTH BOUND VESSEL AND TURNED AROUND TO AVOID SOUTHBOUND VESSEL. UNIT 2 WAS FOLLOWING UNIT 1. UNIT 2 RAN INTO UNIT 1 CAUSING UNIT 2 TO RIDE UP ONTO UNIT 1.According the the statement attached to the BAR, operator1 was riding a rented jet ski and he was turning to avoid a boat and when he turned around he ran into vessel 2. Operator1 hit his head and fell into the water. He stated he received minor injuries. operator2 stated that she was riding on a jet ski and was  going straight. The other jet ski turned to avoid a boat and she stated she ran into the other jet ski head on and fell into the water. She stated that she received minor injuries.