seems like a good idea and the variable float system a good way to solve some problems. as others have mentioned it's worth looking into its cost effectiveness and compare to other flow power generation systems which I don't know enough about.
it might not be a problem, but how do sea life respond to such devices? I mean do they know to stay away or will they be mammal blenders? :)
we are stupid enough with regard to ocean life as it is so it would be unfortunate if this will kill whales, dolphin, sea lion, shark etc
it might be better to just go with windmills and work on energy storage technologies for those which we will likely need anyway.
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by Dan Frederiksen