RedactedNarrative: Vessel 1 left out of Crystal River for a day of fishing in the Gulf of Mexico.  Also in the vessel were two passengers.  As they approached Channel Marker 5, the operator failed to see the Marker and impacted it on the forward port side of the bow.  The Operator and front passenger were thrown forward inside the vessel while the third occupant was ejected from the vessel into the water.  All 3 occupants received injuries.  The deceased was transported to Seven Rivers Medical Center with life threating injuries and was later flown out to Johns Hopkins All Children's Hospital in Tampa Florida where he was later pronounced deceased; Operator:Lacerations to the face, arms, legs; Deceased:Cause of death was blunt force trauma to skull. ; Occupant2:Recieved loss of 1 tooth.