We all know there are plenty of places in the world that let you enjoy interacting with the beauty of perfectly clear blue-green waters and undersea life. But, is there really anywhere you can immerse yourself in it . . . literally?

Presenting Poseidon Resorts, where your entire vacation is spent underwater. Based on submarine technology, with more than 60% of the exterior surface consisting of transparent acrylic "windows," Poseidon offers guests the opportunity to spend every minute of their stay enjoying spectacular panoramas. Each guest suite is built around a private reef that is lit for viewing. A food dispenser is included, as well, to attract various, view-enhancing undersea creatures.

The five-star luxury complex, which is accessible by a series of tunnels from the surface, includes a revolving restaurant, pool (?!?!), bar, café, tennis courts, dive shop/water sports center (of course), library, and luxury spa/hydrotherapy center.

Poseidon’s website indicates that, although construction has begun on the system of pods that make up the individual suites and common facilities, the resort is due to be relocated from its original site. So, alas, the time has not quite come yet to whip out the rewards card and book a long weekend; but he reality of this next step in vacation retreats seems near.