These incidents usually take place in deeper water and are not believed to be cases of mistaken identity. Rather, sharks are angry or want to eat. Tips for Avoiding Attack Stay out of the water at night, dusk, or dawn. Sharks are most active at night. Swim in a group.
Sharks prefer to attack lone victims.
Keep close to shore. It will be easier for help to reach you in an attack. Avoid sandbars and sharp drop-offs where fish congregate. Stay out of polluted or murky water. Avoid areas being used by fishermen.