I echo Pfc's comments too. It seems to me that there has been a rash of divers deaths this last year or two in western canada but no reporting on them collectively. I can think of 4-5 right off the top of my head without checking which seems high for such a safe sport.
I agree with DaleC and PfcAJ - from my limited time on the board, here is the general order of occurrence of an accident or incident:
1. Someone posts it on SB;
2. Soon there is a link to a newspaper article which indicates that the diver was breathing oxygen and at a depth of 140 meters;
3. Someone posts which dive shop was running the dive;
4. A day later a different newspaper follows up on the report, including the diver's status (this assumed not dead at the scene);
5. Police investigate, foul play is not suspected;
6. Diving gear is sent for analysis;
7. The police, once satisfied that the diver was not strangled by his/her dive buddy, are only too happy to hand off the incident to the appropriate provincial underwater council;
8. The underwater council, while well-meaning, is understaffed, largely volunteer, and lacks any powers to place witnesses under oath, serve subpoenas, or compel testimony. A witness can lie before them with impunity and can refuse any request for information;
9. Based upon the quality information gathered in 8, above, the underwater council issues a twenty to thirty page report on the incident, over 75% of which is fore-matter and appendices which appear in every one of their reports. No one is ever found to be negligent since no one is ever stupid enough to self-incriminate before the council. The verdict is therefore always a medical condition or diving beyond one's abilities (which was hidden from the operator); and
10. Nothing ever changes.
Please note that I don't mean to state that anything must change, or that every accident is the fault of an operator. The truth is that we simply don't know because, unless the deceased diver's buddy left his monogrammed dive knife protruding from the victim's chest, all effective investigations cease once the police assume that it was not a homicide.