Did you know many astronauts live underwater before they live in space? Underwater missions from subsea human habitats are a close analog for spaceflight, as Roger Garcia explains in this video. Reid Wiseman, Commander of Artemis II, can attest to this. He was part of NEEMO 21, an underwater mission NASA conducted from Aquarius Reef Base, along with DEEP’s Director of Scientific Research, Dawn Kernagis. #DEEP #Astronauts #Space #Ocean #NASA