Man Jumps Off Cliff in Australia Right Into a Great White Shark

While some people are claiming this is a fake, is sure looks authentic.  This video claims to be of a man who's cliff diving in Sydney Harbor and he almost lands right on top of a Great White Shark.  The entire event was captured on his GoPro.  Do you think it looks real?  Either way, it makes my stomach turn.

Tim Engelbrecht on Youtube has a video post that claims to debunk the video as a hoax.  What do you think?