Every few years I watch this to remind myself that this was real. I think I first saw it on Funny junk back when it was primarily competing with Newgrounds for user-created Macromedia flash animations.
Growing up summering on Marthas Vinyard (where they filmed Jaws) I have a unrealistic terrifing fear of sharks.. ESPECIALLY Great Whites! This guy punched a Great White untill it let go of his wife, pulled her to shore and saved not only her leg, but her life. Cheers Mate! Balls of Steel!!