RedactedNarrative: Vessel 1 had just pulled anchor and was starting to return to shore coming up on plane when the outboard became propeller fouled at Molasses Reef mooring ball 16. Vessel 1 came to an immediate stop and engine shut off.  Waves came over the transom of V1, a back country flats skiff, causing the vessel to take on water quickly swamping it.  V1 went down by the stern.  Both the operator and occupant grabbed PFD's and swam to the nearby Molasses Reef light structure where they awaited till day break when a passing dive boat retrieved the occupants and transferred them to a USCG vessel that responded.  
  
  FWC investigating officer located the sunken vessel at mooring ball 16 at Molasses Reef.  It was down by the stern that was on the seafloor.  The bow was still submerged below the surface.  The owner/operator of V1 was provided the GPS coordinates and location and was going to hire a salvage operator to retrieve his vessel.   
  
  Hours after returning to shore subject had significant reddening on his chest and stomach area.  This was caused by exposure to either gasoline leaking from the boat in the water or moon jellyfish that were in the area.  Medical treatment was refused on shore.