Regarding advanced tech/magic interfaced with a dumbed down population, a wet future, and what you need to know about seagrass...
Small Boats Magazine has a great article on Phil Thiel's Escargot that you really should take a look at. As it happens, I'm a huge fan of the Escargot and have often considered building the Escargot or it's slightly bigger sibling the Joliboat and keeping it on the French canals as a Pied d'Eau.
So many great designs, so little time...Listening to France Gall
So it goes...