Weight belt removal / replacement at the bottom

Weight belt removal / replacement in mid-water in motion

Weight belt removal / replacement in hovering with feet touching at the bottom

Breathing from the octopus of your buddy (stationary)

Simulation of a controlled emergency swimming ascent (horizontally)

Neutral buoyancy near the bottom (oral BCD inflation)

Hovering in mid-water

Primary regulator to octopus exchange

Ascent with the octopus of your buddy

Neutral buoyancy near the bottom with the broken inflator