Underwater Living
Underwater hideouts may be the domain of James Bond villains and Gerry Anderson's Stingray puppets but people in the real world are also dreaming about living at the bottom of the sea - and the dreams may not be far off being realised.
Luxury resorts and restaurants, roaming fleets of research subs and domestic pods with fish-side views are among many ideas floating around, as you might say, for populating the oceans.
The way architect Michael Schutte sees it, with plenty of people prepared to pay a premium for living next to the sea, the next logical step is to start building below the waterline.
"If you've spent $15m on a piece of waterfront property in Miami, what's the next thing that you're going to add to that to actually improve that experience?" he says.
Perhaps build an underwater cocktail bar or a docking station for a submarine to take visitors to see coral reefs, he suggests.