Yes, you read that right. American swimming great Phelps—who has set 39 world records and won 28 Olympic medals, 23 of which are gold—is set to face off with an actual living, breathing shark as part of the Discovery Channel's Shark Week.

This would be thrilling if it was a possibility that Phelps would be starting about 200 meters ahead of the great white and racing the shark to the safety of a cage. But it looks like he'll be caged from start to finish.