But don ' t tell american ' s because it ' s communist . <| sep |> PUNT LIVES MATTER ! !!<| sep |> Often moving parts underwater , i . e . propellers , will have significantly less buildup when continually submerged . This coupled with the strong currents should discourage growth on the blades of the generator for most of the day . When water is stagnant over the blades , there are many different types of marine coatings for metal and composites like fiberglass and carbon fiber that inhibit biofouling aka epibiosis or growth of things like mussels , barnacles , algae , seaweeds , and other aquatic life prone to attach to wetted surfaces . I am sure many of these principles would be applied to ensure efficiency . <| sep |> It ' s like a sandwich . God I love McAfee .