Hippocampe
This underwater habitat, created by a French Architect, Jacques Rougerie, was launched in 1981 to act as a scientific base suspended in midwater using the same method as Galathée. . Hippocampe can accommodate 2 people on saturation dives up to a depth of 12 metres for periods of 7 to 15 days, and was also designed to act as a subsea logistics base for the offshore industry.
Read more about this topic: Underwater Habitat