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.
The famous voyaging canoe Hokule'a and her sister vessel Hikianalia left Oahu on May 17 More >>
The famous voyaging canoe Hokule'a and her sister vessel Hikianalia left Oahu on May 17 for "Malama Honua", a three-year voyage around the world to spread a message of global sustainability and the importance of caring for our oceans.More >>