Tony and I watched this video one evening before going to sleep. We shouldn’t have. I suggest that you rather watch it in the morning. Regardless of how high the sun is, though, the guidelines and warnings provided here should be taken deadly seriously by every diver.
The warnings regarding the overhead environment of a cave are equally applicable to the overhead environments encountered in a shipwreck. If you have not had the proper training, do not go inside. If you don’t know what the “proper training” is, you haven’t had it. The odds that you will die, and possibly cause the death or injury of someone else, are simply too high.