In a blog on www.usfreediving.org, he told of wandering the city streets after a constant-weight dive to 75 meters, occasionally spitting blood on the sidewalk.
After alignment of an INS using GPS data, the vehicle with two weights for diving and surfacing is lunched in the sea.
He was still wearing his wetsuit, a weight belt and dive mask.
Body fat increases buoyancy, thus more weight on the dive belt is needed.
The advisory also designates four areas where mini-submarines can release their dive weights so the vessels can become buoyant enough to return to the surface.
China has no shortage, with its athletes prevailing here in diving, weight lifting, shooting, badminton, archery, table tennis, swimming, rowing, gymnastics, fencing and perhaps soon, even beach volleyball in a nation where bikinis were frowned upon until quite recently.
I also set up a twelve-by-forty-foot black background for this picture that we hung over the wall of the pool and weighed down with black dive weights.
Whether the creation is made and shipped out remains to be seen, but Musk suggested on Twitter that it would be "[f]itted for a kid or small adult to minimize open air" with "[s]egmented compartments to place rocks or dive weights" and "adjust buoyancy".
Releasing an abalone, which can cling to rock with a force equal to 4,000 times its own body weight, requires multiple dives.
Laura Heartman says that when she is fully rigged up for a deep-sea wreck dive, her weight nearly doubles.
Its biggest successes have come in six core sports: badminton, weight lifting, table tennis, diving, swimming and artistic gymnastic.
