I just returned yesterday from Cozumel after 3 days of diving with Dive Paradise on the Aeries and there was never once any mention of any lost divers. However, we had 3 Divemasters on board for 23 divers and divided into 3 groups for all dives. My divemaster counted us going into the water, as soon as we descended he counted us and quite frequently throughout the dive I saw him counting. When we boarded he waited for us to get on board first counting us again. As we picked up our other two groups they were all counted. Now we were a chartered group that came together and we usually call roll on other dive trips, we also have dive leaders in each group that keep us together and monitor the numbers. We buddy up, but remain a group buddy system as well.
I have to praise our divemaster as we did have a diver, my buddy, as a matter of fact have a serious problem occur that he handled quite well. My buddy experienced severe difficulty breathing on ascent from our first wall dive and when on board did not respond to oxygen, she was grey and began coughing up blood and fluid from her lungs, we had a physician in our group who also helped to care for her. We got her to a pier and she was taken to a hospital, where DAN ruled out DCI or that a rapid ascent as the cause. She did ascend faster than our group and I broke surface first after she had and found that a diver from another boat was towing her to our boat, our divemaster came up next and immediately went to assist her onto the boat and stayed at her side the entire time. She was released later that day and told she is never to dive again. This lady is 67 years old with unstable hypertension, what she was diagnosed with was acute pulmonary edema. She was treated with IV Lasix, prednisone and antibiotics. I will say that she never felt too good the rest of the weekend. We were roommates, and I am an RN so I did watch over her and assist her throughout the rest of the time. I checked on her last night and found out she had to go to the emergency room here at home during the day, as her BP was 240/120 then, it later dropped down into the 90's. I will tell you this was a scarey incident that turned out ok, but she was very close to death and it would not have been the dive operators fault as she has not been honest about her health to anyone, not even herself.