Ok I'll try to address some of this.
Two divers in full gear were sent out .... How fast did they get there compare to sending 2 snorkelers to evaluate the situation. You did not know then which diver was in distress !!!
This is one of the main points I was trying to make. We did debate breifly if one of the two divers should go with a snorkel but decided against it, primarily because the divers on the surface didn't look like they were in trouble and we "guessed" (correctly) that it was a missing diver situation which would require two divers in scuba and not one in scuba and one with snorkel.
It was an important judgement call that saved us a lot of time. The take-home message here is that your *first* moment to "evaluate" the situation is before *anyone* gets in the water and not after the first snorkeler arrives at the scene. Of course you could "guess" wrong but the one-size-fits-all solution of just blindly responding to everything that happens by sending a snorkeler first, which I know some instructors teach, is something that I personally think is akin to shooting the gun first and then aiming at the target second. This thread is about the differences between theory and practice. In theory always sending a snorkeler first might sound like a pretty good idea. In practice blindly sending a snorkeler without first engaging the brain might cause you to actually *lose* time.
Having said that, if I had had more divers available I would have sent two in scuba AND one or more with a snorkel right away. Given that we only had two divers ready to do anything we had to make a choice and we chose wisely.
The 2 divers immediatly descend ..... Leaving those 2 divers at the surface by themselves !!!
Correctly handled. At this point they were pretty sure that there was an unresponsive diver on the bottom and to have done anything else would have meant that the diver on the bottom would have spent more time down there. Furthermore, the divers on the surface, although clearly in a state of emotional distress, were responsive and not injured they were sent to shore and I was standing on the shore watching them swim in.
The 2 divers decided to SPLIT UP and continue searching !!!! Isn't this asking for trouble ?
Another judgement call. This one is certainly more debatable. I was one of those divers and I don't have any particular issues with diving solo. I wanted to go back to where we had started searching in (18 metres) and try in a different direction but my buddy only had 80 bar pressure left. At the time this happened we were in about 10m of water so I suggested that he remain at that depth and search for a few more minutes while I went back and he agreed so we split up. Is this potentially dangerous? yes and I certainly wouldn't teach this becasue we tell rescue divers to be very careful that they don't become victims themselves..... Having said that, it *did* mean that we were able to keep at least one more diver searching on the bottom for an additional 15-20 minutes. I would think if you're not completely at easy with diving solo then you shouldn't do that but like I said it was a judgement based on my knoweldge of my own diving abilities and the fact that the other diver with me was a DM who was already in the water solo when I met him. Still.... this could have gone pear shaped and I'd be writing something else about it right now so I do hear the criticism of this call.
First priority was to get to the 2 divers at the surface to rescue them. Diver #1 was clearly signaling he/she was in distress and Diver #2 DID need assistance ( the passive panic diver that everybody missdiagnosed ) I think 2 skorkelers should have been sent in, and assist in getting those 2 divers back to shore.
The first priority is to evaluate the situation as best you can not to just jump in a "rescue" the people who raised the alarm. Were they relaxed and happy? No. but they were certainly capable of making their own way to shore and had we taken time to escort them to shore first then we would have missed our chance to recover the victim alive. Diver #1 was dealt with by people on shore once she was out of the water and we screwed up our handling of Diver #2 when he was out of the water. That much is clear. Would it have been better to send snorkelers to the two divers on the surface? yes. But I didn't have snorkelers available at that point yet and I was busy calling the EMS and I needed to stay put until I was sure they were able to find us. By that time the two divers on the surface were out of the water.
If I understand correctly, the one person in charge left the accident area ?
Yep. Big misser. The one person who still knew what was going on under water left the area. Major screw up. He got focused on teh victim and lost track of the task he was there for. This is one of the things I wanted to get out there. In theory people don't lose task focus but in practice the state of the victim can be very shocking and can cause people to forget what they were doing. I hope that if you ever find yourself in a similar situation you'll remember reading something about that and keep your task focus or remember to watch others and help them keep theirs.
I hope you were not one of the 2 divers that split up !!! If something would have happened to you, you would probably still be down there !!!
I think we covered this.