The Olympic champion swimmer was bested in the Discovery Channel's Shark Week special "Phelps vs. Shark: Great Gold vs. Great White."

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Michael Phelps has finally met his match in the water: a “great white shark.”

The Olympic champion swimmer was bested Sunday night in the Discovery Channel’s Shark Week special “Phelps vs. Shark: Great Gold vs. Great White.”

But Phelps didn’t swim with a real shark. He competed in the ocean against a computer-simulated fish based on data on the swimming speed of sharks.

After Discovery Channel’s efforts to hype up Phelps’s big race against a shark, the fact that Phelps ended up racing a fake shark left many viewers disappointed.

For his big race, Phelps wore a wetsuit and a monofin to mimic a shark’s powerful tail. He finished the 100 meter race in 38 seconds, two seconds slower than the simulated shark.

On Monday morning, CBS News had this to say of Phelps’ race against the computer simulated shark:

Phelps tweeted Sunday that he’d like a rematch, but in warmer water.