RedactedNarrative: JET SKI 1 WAS TRAVELING S/B ON ST. CLAIR RIVER NEAR PEBBLE BEACH WHEN THEY TURNED TO THE RIGHT AND DID NOT SEE JET SKI 2, CAUSING THEM TO CRASH INTO JET SKI 2.  JET SKI 1 STARTED TO TAKE ON WATER AND SINK.  FIRE DEPARTMENT SECURED CRAFT TO POLE NEAR ACCIDENT FOR OWNER TO RETRIEVE.  JET SKI 2 GAVE RIDER OF JET SKI 1 A RIDE BACK TO DESMOND'S LANDING FOR REPORT.  EMS DECLINED, NO VISIBLE INJURIES.