research station Aquarius An underwater habitat and research laboratory deployed on the ocean floor at a depth of 62 feet/19 meters and located 3.5 miles/6.5 km from Key Largo, FL. The installation consists of a surface-level life support buoy, the 45ft/14m x 9.8ft/3m habitat with living quarters, life-support systems, and laboratory space, and two underwater waystations supplying air for aquanauts on extended dives outside the habitat. The habitat includes a wet entry porch, a pressurizable main cabin, and a sealable entry lock connecting the two pressure zones. Saturation diving allows crews of up to six people to conduct extended missions while living in the habitat. Aquarius enables spaceflight analog studies approximating extreme space environments, extravehicular activity, and isolation and confinement of crew.