Thanks to climate change, the 1 percent now have a new problem to worry about. As sea levels rise, their private islands are imperiled. With a new concept from Swiss submarine-maker Migaloo, islands no longer have to be so annoyingly stationary. Kokomo Ailand is a custom-built multistory mega-yacht that comes complete with a penthouse, submarine bays, a beach club, and a shark elevator.

Specs of Migaloo Submarines: Kokomo Ailand

Footprint: 98,304 square feet (384 feet long by 256 feet wide)

Hull depth: 67.25 feet

Build time: Five to eight years

Cost: TBD (What's your Forbes rank?)

Top speed: 7 knots (8 mph)

Solid Ground

Like a cruise ship, Kokomo Ailand is a series of decks. They sit atop two massive pontoons, which remain submerged to keep the craft level. Four submersible towers extend below the pontoons; they house storage, service decks, and the four anchor lines that keep the Ailand in place.