Michael Phelps races a great white shark (sort of)

Olympic great Michael Phelps races a 'great white shark' on Sunday as part of . The shark was in-fact a computer simulation rather than a actual great white but its swim speed was calculated using data collected from the real thing. Phelps finished the 100m course in 38 seconds, two second slower than the 'shark'

View the video at https://www.theguardian.com/sport/video/2017/jul/24/michael-phelps-races-great-white-shark-video