Michael Phelps has dominated every human he's raced against, so now he's taking on another species. He's racing a great white shark for Discovery Channel's 'Shark Week.'

The press release calls it "Great Gold vs. Great White" and says, "[Sharks] are one of the fastest and most efficient predators on the planet. [Michael Phelps] is our greatest champion to ever get in the water. But he has one competition left to win. An event so monumental no one has ever attempted it before. Phelps v. Shark – the race is on!"

So, will Michael and the shark be swimming side-by-side, separated only by a floating lane marker? Probably not.

There aren't any details on how the race will be set up, so we don't know if they'll be swimming in the same place, let alone at the same time. Maybe it'll be lame, and Michael will just time himself against a shark's average speed.

The "race" might have just filmed in South Africa. Last week, Michael posted a photo of a shark, and captioned it, "I was able to do something that I had always wanted to do. Be in a cage and dive with Great White sharks."