Clearly, John Gordon's images do not belong in the general category. Here's BTS's own definition of the general category "A. General: Wide or medium shots of divers, wrecks, reef environments, etc." John's images are beautiful but they are macro shots. Unless it's just a typo on their site, it seems kind of wierd.
Lionfish, I think you are correct in your observation, my files for the competitions I labeled these images for entry in BTS as "C" for the macro categories I'm not sure what happened as I entered five major competitions and the rules for each were quite different. In my effort to comply I found it necessary to re-edit and size for each competition multiple times perhaps, if I made a mistake on the entry form. I cannot find any defining evidence on my end showing which category they were entered in to for BTS. This is the first year I have sent entry's so I could have made a mistake. My apologies if the mistake was mine.