The scene starts off simply enough — A man straps on a GoPro and jumps off a cliff into Sydney Harbor. As soon as he comes up for air his friend is yelling “Shark! Shark!” He ducks underwater and there’s a nightmare-sized great white swimming terrifyingly close. You hear his screams underwater. Why then is this video so hard to believe? Is it because it’s our worst fear coming true, or is it because this chaotic clip comes off so clean and polished? Watch the video and decide for yourself.