Recently a diver was using a spear to do some fishing and while he is in the middle of catching a fish he was surprised by a shark.  The shark must have been attracted by the scent of the fish he was catching and thought he would swoop in for a little snack.  The diver quickly used his spear to keep the shark at bay until he was able to get to safety.  I'm not sure I would want to get back into the water after this happened!