The great white shark is considered the most dangerous, just because of all the attacks it does on humans. but then again, there's only around 50 shark attacks a year but we humans kill way more...
There are more than 500 bull sharks in the Brisbane River and greater numbers still in the canals of the Gold Coast in Queensland Australia.
Coastal waters, in tropical and temperate seas. Also in freshwater near rivers.
a tiger shark
In my opinion,it is the most dangerous shark in the world.My reasons: It attacks sometimes for no reason. It will attack in shallow water.