Compléter 99-testVersion en ligne 99-test par Farhad Key 1 grew injured spent wading overfishing learned bite thinned flat Sharks killed four people and 58 others around the world in 2006 , a comparatively dull year for dangerous encounters between the two species . Shark numbers steadily over the last century as humans reproduced exponentially and more time at the seashore . But the numbers have been over the past five years as the shark population near shore and swimmers have about the risks of into certain areas , Burgess said .