Finally caught a picture of one.
It was flying in my room, was very startled. It’s been very swampy, humid, and extremely hot where I am in Florida rn
One of the school of 4 billfish seen at 5 m safety stop. Photo 1 by me, images 2 and 3 (same fish) are stills from a video taken by dive guide Safdhar Suresh, who was the closest to it. Shape and coloration of the sail (though partially folded) of this fish are wrong for the marlins of the genus Makaira. So is the elongated body and the colour of the fish itself.