The video below shows a spear fisherman having a very close encounter with a great white shark.
The fisherman is keeping a close eye on the shark as it swims around. Then the shark makes a beeline towards the fisherman, and they have a brief, but terrifying, face-to-face encounter.
You can tell this guy was freaking out by how he rushes to the surface as soon as the shark starts heading the other direction.
What a moment!
Just add some music from JAWS to this clip and it will really freak you out!