Quirky scenes show astronauts taking one wet leap for mankind.
Researchers have been testing a new spacesuit underwater to mimic low-gravity conditions.
NASA announced on Tuesday, Sept. 30, that it was putting the kit designed for a Moon landing through its paces.
The Axiom Space AxEMU is a flexible, advanced lunar spacesuit designed for the Artemis III Moon mission to enable more comfortable, safe, and longer moonwalks in extreme environments.
Artemis III is NASA's planned mission to land astronauts on the Moon's south pole for about a week, marking humanity's first lunar surface expedition of the 21st century. The space agency say the mission will happen no earlier than mid-2027.
NASA's Johnson Space Center said: "What's better than one suit in a pool? TWO suits!
"NASA and Axiom Space teams held the first dual spacesuit run at NASA - National Aeronautics and Space Administration's Neutral Buoyancy Laboratory with NASA Astronauts Stan Love and Loral O'Hara wearing Axiom Space's lunar spacesuit.
"This was the final integration test in the pool, proving both the spacesuit and facility are prepped and ready for NASA Artemis training."
NASA's Neutral Buoyancy Laboratory is a vast underwater training facility in Houston, Texas, where astronauts rehearse spacewalks in simulated microgravity using a massive pool and space station mockups.