Who: Michael Phelps and a great white shark.
When: Posted on 26 July 2017.
What: The American and Olympic swimmer Michael Phelps has raced a great white shark in the Bahamas. Phelps and the great white where both timed and the shark won by 2 seconds.
my opinion: I think it was pretty obvious that the shark would win because its natrual habitat is the sea.