RedactedNarrative: Was leaving the beach to return home. Made several attempts to start PWC and it wouldn't start. Upon trying again, it exploded, ejecting the Operator and both Passengers into the air landing in the water. According to witnesses, we were anywhere from 6-10 feet in the air and landing in the water 3-10 feet away from the wave runner. It was on fire at that point and then became completely engulfed in flames and was still burning when the three of us were taken to hospital by ambulance approximately 30 minutes later.