We had a death here a few years back, where a husband and wife team had surfaced away from the only exit point, and were WADING back to it in their gear -- the wife somehow lost her balance and fell and ended up underwater, and drowned. I don't remember the details, except that they weren't even diving at the time.
I have had a couple of occasions where we went out as a team of three, and one person had a problem before descending and decided to return to the shore, and the others have proceeded with the dive. I don't condone it, but having been the diver who swam back to shore, I know I felt that what I was doing was safe. On the other hand, the only injury I have ever had diving was a fall getting OUT of the water, and one which resulted in a fractured eye socket. It would have been very difficult to have coped with that alone.
I have had a couple of occasions where we went out as a team of three, and one person had a problem before descending and decided to return to the shore, and the others have proceeded with the dive. I don't condone it, but having been the diver who swam back to shore, I know I felt that what I was doing was safe. On the other hand, the only injury I have ever had diving was a fall getting OUT of the water, and one which resulted in a fractured eye socket. It would have been very difficult to have coped with that alone.