So we all knew Michael Phelps wasn't really going to race a shark side-by-side, right?

As obvious as that may have been, some people are still a little let down by the fact the gold medalist's big race against a great white on Shark Week was almost completely faked.

Many believed the shark would have at least been timed in the same waters as Phelps (at a different time) and then videos of both competing for the best time would've been edited to look like they were next to each other.

But actually, Sports Illustrated reports that researchers from Discovery calculated how fast the great white would have moved in the water and superimposed an image of the shark swimming next to Phelps.

But why not go for something at least a little more real? Well, perhaps that too should be obvious.

"Trying to get a white, for example, to swim up to 25 miles per hour in a straight line can be tough," Phelps told Good Morning America on Thursday, July 20, ahead of the race.

The Olympian did, however, take the plunge into shark infested waters off the coast of South Africa. He was protected by a cage. And when he swam in those same waters, he says about 12 to 14 divers were nearby to keep him safe.

Phelps swam 5.9 miles per hour and lost to the shark by two seconds. He implied on Twitter that he'd face off against a great white again, but next time he wants home water advantage.

We discussed the stunt with the guys from Free Beer and Hot Wings. You can watch the video above, and enjoy our banter with them every weekday morning around 5:53.

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