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REGENT Begins Sea Trials of First Passenger-Carrying Seaglider
(www.regentcraft.com)
Technology for a Solar-Punk future.
Airships and hydroponic farms...
It's not so crazy ๐ Ground effect water planes have a long history: https://en.wikipedia.org/wiki/Ground-effect_vehicle
I think the point of this specific design is mostly to make an all electric plane feasible for medium distance coastal travel. For example from the Spanish main land to the balearic islands.