"We think humans could run on water for a few steps if they had feet the size of snowshoes or open umbrellas," McMahon answers.
A human water-walker would have to raise his or her umbrella shoes up to their ears, like the J.C. lizard does, to get the required slap speed. Then they would need to furl their feet and pull them out of the air cavity in about a quarter of a second.
"For a man or woman to do that would require a sustained power output at least 15 times greater than ever achieved by humans," McMahon notes.
