It is not Scuba. Scuba divers are well trained. Accidents happen but considering the number of divers out there scuba is quite safe.
Jogging and riding a bicycle would rate much higher.
Lawn Bowling. Lawn Bowling kills thousands per year. Usually the cause is from strokes and/or heart attacks from the impact of the large, heavy ball.
In general it is known that Asia has the highest road fatalities rate in the world.
golf
The most fatal sport is fishing. This is due to the fact that people can drown, hit items in the water with their boats or if them or others have been drinking possible drunk driving accidents. I forgot what the exact number of deaths was per year in fishing compared to other sports but it has the highest death rate.
Bicycling
Hockey
Bicycling
Bicycling
marathon
The highest paid major league sport is the NBA. After that would be the IPL.
Logging has the highest death rate.
Futbol or as known in America soccer is the sport with the highest participation.
It is the Sport Cult.