I was diving off 7 mile beach on the day in question while on cruise. Not sure if I should list the dive operation here, but I will add that the briefings were good, but the first dive included a 90' descent, follow the DM in a large circle (on the edge of a wall) and then up the reef back to the anchor line. We were told the cruise line set the 80' max depth limit for liability reasons, yet nobody was asked how deep they went or about any issues with that depth based upon training or the lack of.
My only input would be I didn't like that dive of the day. While following the DM, the other 11 people were doing whatever they wanted to some degree. I had some idiot cut in front of my son and I doing flips underwater as if he was narced. The DM had no idea and I was on her heels and slightly above with my son due depth and experience levels. When I hit my gas plan limit (which was only my own), I turned the dive to a shallower depth and began a SS. No contact from the DM there either. This was my first dive in GC and while it was an excellent dive site I did not feel safe following the "group's plan." After a few minutes under water I wanted to keep a safe distance from the "vacation divers." ALL of the divers were from the cruise ship and in hearing some of the conversations led me to believe they were just vacation divers. One couple told me they had never done a salt water OW dive! Did the dive op know or ask? NO. To be fair to them though they dove safely IMO.
All this to be said, I did not see a major search operation while diving that day, but there were lots of storms dropping visibility pretty good. If one is to dive anywhere I have to agree with Jimlap that they must be a self-sufficient buddy team! The first dive along the wall ( I believe they stated a 7000fsw drop) was almost a check dive with the group and the DM's because the second dive was shallower 52' at a wreck and reef where the dive op cut the buddy teams loose on their own. I can see how this can be a reoccurring problem if the dive ops don't keep a good eye on the divers. We as divers should be responsible for ourselves so I'm not totally blaming the dive ops for these deaths, but I would think requiring a brief examination of the log books might be in order to gauge how to break up the groups. With the competition for cruise group bids, anything to make it easier on the vacationer is probably why this isn't happening. I know the cruise line was hesitant to give out the dive op under contract during the planning phase too. The cruise shore excursion thought they would be able to field questions themselves (as some do dive) but they couldn't and ended up listing a couple dive ops they used. Face it, this is a tourist spot and diving is a business. While we can hope some dive ops attempt to make things safe and enjoyable for the groups, we must police ourselves too.
So from this it appears that they are still allowing divers of unknown skill and training to do deep wall dives where the actual bottom is over a mile down? Yeah real safe and caring guides they are. More like greedy, self serving, inconsiderate, and dangerous. Must be an unwritten rule somewhere as to what an acceptable body count is.