This is not biology at all :-)
I’ve previously seen (& linked to) videos of people walking on the surface of a mix of cornflour and water. (Marcus will be able to explain the physics behind it.) But now – via PZ Myers – we have:
Walking on Custard!
If my embedding skills fail, follow the link in Custard :-)

At the risk of stepping on Marcus’ toes
http://www.popularmechanics.com/science/environment/water/the-reason-you-can-walk-on-water-and-cornstarch-10555366