Most attacks occur inshore or between sand bars where sharks can become trapped in low areas. Areas with a steep drop-off are likely attack areas.
Sharks come by the shore because most of their food is in that area.
There are three ways that a shark would attack. The shark will come, take a small bite or slash, and will not return. These type of attacks usually involve divers or swimmers in somewhat deep water, but occur near shore areas of the world. The most common killer is the great white shark. With its huge jaws it could swallow a six foot man whole.