http://www.msnbc.msn.com/id/48035184/ns/technology_and_science-science/#.T_DqehdDx8E
“When watching the Summer Olympics, take a good look at the hands of the competitive swimmers. Chances are, their fingers will be slightly spread. Now new research finds that this hand position creates an “invisible web” of water that gives swimmers more speed.
“It is a counterintuitive idea, the fact that you should paddle with a fork, not with an oar,” said study researcher Adrian Bejan, a professor of mechanical engineering at Duke University.”