I saw a documentary on this a number of years ago, Discovery channel I think. It explains a lot. They tested putting methane into an aircraft engine and it stalled cold. And even if it didn’t, it would make the air much lighter, giving the pilot the impression that they were climbing, then they would dive to compensate and thus, crash. And it makes sense with the water too. It was fascinating. There’s probably some kind of natural/metaphysical combo in that particular area.