A new way to harness energy from flowing water is being developed that does not require powerful currents. Instead, small devices composed of cylinders and springs are placed in slower moving water, harnessing the power of small energy vortices that form because of their presence. As flowing water interacts with the cleverly constructed devices, vortices form, channeling energy into the devices which can be converted to electricity. When fish swim, they similarly harness the power of these micro-vortices. Leonardo Da Vinci himself observed and noted the phenomenon 500 years ago. The new technology promises to be cheaper and more efficient than current wind and solar alternatives, with the added bonus of being more wildlife-friendly than current hydroelectric technology.