Underwater living is now a popular lifestyle option for those who love the ocean and undersea creatures. Its estimated that as of 2001 there are over 1700 people living in some sort of underwater habitat.
Underwater living began to take major steps forward in the late 1950s. Scientists needed a way to test astronauts for future missions in space. Deep sea provided that. As the vision of dozens of people in space took hold the habitats would become larger and larger. These also provided a unique opportunity for swimming with whales after the whale song popularization took shape. Evenually starting in the late 1960s some habitats were built as hotels. As these hotels lowered in price many began living full time.
Most underwater habitats have the sam standard modular based exterior. The Interior however is usually extremly different. It could be functional or decerative or whatever the inhabiter wan'ts or can afford.