What was the point of the three men in the night ? Served no purpose but to add ten minutes to the film.
Maybe they put that in there to show that if you go into the water, the sharks could eat you.It´s 50/50 whether you make it or not.If it harms none, do what thou wilt.
They wanted to scare abilone poachers into never going in the water again. Damned environmentalists! Grrrr!