One thing to consider.... I'm just saying .....
Dolphin voyeurs kill the mood for saucy submariners
Some of the world's richest people are reportedly using their private submarines to indulge in deep-sea sex in front of panoramic marine vistas.
But these aquatic trysts are sometimes interrupted by groups of voyeuristic dolphins, which excitedly tap on windows with their beaks.
One of the world's top designers of luxury subs, US Submarines president Bruce Jones, told Bloomberg that dolphins were a problem for the amorous owners of his multi-million dollar vessels.
"Dolphins are easily excited when they sense people making love. They get jealous and bang their noses against the window," Mr Jones said.
The best solution was to block the dolphins out with a set of curtains, he said.
Another top designer, Herve Jaubert of Dubai-based Exomos, told Bloomberg his clients wrestled "with how to conduct a deep-sea love affair in front of an observation window without creating an underwater paparazzi".
Around 100 luxury submarines are believed to be submerged in the world's oceans, but it is not known who owns the majority of these undersea palaces.
Russian billionaire Chelsea Football Club owner Roman Abramovich has a submarine, as does Microsoft co-founder Paul Allen.