NEEMO 23 crew

ESA astronaut Samantha Cristoforetti (third from right) with the full crew of NASA's NEEMO 23 research and exploration mission to the Atlantic Ocean floor. The crew will spend 10 days living and working at the world's only undersea research station, Aquarius.

Located almost 19 m below the surface of the ocean, near Key Largo Florida, USA, Aquarius is an ideal environment to test concepts for future missions to the Moon and Mars, simulate spacewalks and carry out marine science under the guidance of Florida International University’s marine science department.