ESA - Diving deep

Neutral buoyancy pool - Wikipedia

Why Are Astronauts Moonwalking on the Bottom of This Giant Pool? (Video)

long duration flight Archives - Universe Today

Esa Panula-Ontto

Corsi Sub

Descending the Great Wall of China - Underwater360

Robot Used to Train Astronauts Now Tested Underwater - Electrical Engineering News and Products

ESA - Diving into practice

ESA your diving team

ESA's Apollo 11 Under The Sea mission (2013) - collectSPACE: Messages

ESA - Tim scuba diving for space

ESA dives into development of deep-space airlock for the Gateway outpost