A Florida-based startup called Crowd Energy will be turning to Indiegogo to continue work on its Ocean Energy Turbine, a slow-turning mill that its creators believe can harness megawatts of clean power from just a single unit — enough to light thousands of homes. Underwater turbines are nothing new, but this concept is a little different: instead of mimicking the shape and functionality of a wind turbine, Crowd Energys unit is equipped with giant shutters that open and close on giant paddles that spin deep on the ocean floor. This is how the idea of the Ocean Energy Turbine originated, explains founder Todd Janca.