You don't have to wonder. According to the article, "the wrecks were found in waters roughly 300 feet deep, which is near the safe maximum depth for divers."
Well, mea culpa, I didnt read the full article. Interesting picture though. For 300 feet, there is a lot of lighting, but that could be using some really high end camera with some post processing as well.
FYI, 300 feet is safe with proper gas mix and extra training. Most recreational divers are limited to between 75’ and maybe 140’ with decompression stops on the way up when using straight compressed air. Deeper than that and straight air becomes toxic.