Diving at night... well here is what the shark sees and hears. A thing about 7-9 feet long with the scuba fins on. With the tank on the back the diver is maybe four feet wide. Then the beast(me with a tank on) is blowing bubbles... Oh yea I am swinging a beam of light. The shark will find something else to snack on. You can bet on it.

The danger of shark bite in when the swimmer is in poor visibility water and the back of a leg or arm looks like a fish belly. The shark will "hit" what he thinks is the belly of a smaller fish and retreat when he or she figures out they bit on something bigger than they can chew. Swimming at dusk in the surf is the danger zone.