No mention of a professional deep diver or a dive guide among them. I did see one was a ‘diving instructor’ but there must be a serious difference in training divers to pop down to look at some pretty fish and coral vs deep-cave diving.
Another for the don’t do list, right there with avoid fiberglass deep diving vessels.
“ pop down to look at some pretty fish and coral ”
This is exactly what I liked about Scuba diving when I did it in my younger years. I have also been caving, but would never combine the two.