Diver almost jumps off boat into a shark's mouth!

Well this video is just CRAZY! A diver in Hawaii was getting to jump in the water off her boat. Probably something she has done HUNDREDS of times, and something she doesn't even really think about. However, this time as she was getting ready to jump, this MASSIVE shark came to the surface with it's mouth open!! Now, I've read that this woman studies sharks, and "knows" this particular shark pretty well, but that doesn't make this any less terrifying! You have to see this video!