Diving sites and scuba centers in Brazil
In the 1960s and 1970s, cave diving pioneer Sheck Exley conducted a careful study of cave diving fatalities. What he discovered was that, in virtually every instance, the victms demise could be attributed to one or more of just three direct causes.
Later, National Speleological Society Cave Diving Section Training Chairman Wes C. Skiles identified two additional factors that, while not directly responsible for divers deaths, nonetheless contributed substantially to most fatalities.
Here are a synopsis of these rules: