Can you afford to swim among dolphins with Sir Richard Branson?

Adventurer and airplane magnate Sir Richard Branson wants to take you on a pioneering underwater airplane ride. All you need is a swimsuit, an airplane ticket to his private island in the Caribbean, and $138,000.

For the price of a three-bedroom, two-bath home in Omaha, Neb., couples can take Branson's new Necker Nymph aero submarine for a test dive during a seven-day stay at his swanky getaway on Necker Island in the British Virgin Islands. The price includes an $88,000 weekly charter fee for Necker Belle, a 105-foot catamaran which will act as the winged sub's launchpad.

Developed by Point Richmond, Calif.-based Hawkes Ocean Technologies, the three-passenger sub glides on the water's surface "like an aeroplane on a runway," according to a statement from Virgin Limited Edition, the luxury arm of Virgin hotels.