I like this concept in particular, because it has no mechanical parts in contact with the water: https://www.youtube.com/watch?v=gcStpg3i5V8 https://www.youtube

I like this concept in particular, because it has no mechanical parts in contact with the water: https://www.youtube.com/watch?v=gcStpg3i5V8 https://www.youtube.com/watch?v=gcStpg3i5V8 Edit: It seems however that tidal power is a more interesting research area [1]. I still find it's a neat idea, it also makes awesome noises: https://www.youtube.com/watch?v=IK65S0sPtsg https://www.youtube.com/watch?v=IK65S0sPtsg (loud) [1] https://en.wikipedia.org/wiki/Wavegen https://en.wikipedia.org/wiki/Wavegen