Walking on water may seem miraculous, but for tiny aquatic snails, it's an everyday activity. Now, scientists have puzzled out the snails' baffling method of propulsion.
"How the snails were dragging themselves across a surface that they could not even grip was absolutely perplexing to us," said lead author Eric Lauga, a professor of mechanical and aerospace engineering at the University of California, San Diego.
"Hanging on to the water's surface is not the issue for the snails. They are naturally buoyant, because they are so small," Lauga said.