Subjects were fishing for sharks and saw a pod of dolphins. They wanted to get a closer look at them so they boarded their dinghy with a submersible camera. Once on the dinghy they stated that their main vessel suddenly went up in flames. The survivors informed the 47270 crew that they had an extra 5 gallon gasoline jug onboard the boat along with the 5 gallon tank that was attached to the enigne. The survivors were embarked onto the cg 47270 and life jackets donned.  There may be foul play