A video posted on YouTube on Thursday already has close to 3 million views. Taken with a GoPro camera, it shows a man diving into the Sydney Harbour in Australia, and within seconds, he has a frightening close call with a Great White Shark.
Some have questioned the video's authenticity, however, with YouTube commenters claiming the shark simply appears and disappears at the video's 59 second mark.
To view on a mobile device, go to http://bit.ly/1xSlJe1
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