On: 'Underwater bicycle' propels swimmers forward at s...

[chronolitus]

For those like me who are curious what it looks like: https://www.designboom.com/technology/exolung-underwater-air...

[timonoko → chronolitus]

The idea of using transparent container maybe a good idea. Some indicator when you are sucking only water.

Because I am fool, I tried to make my own. But gave up because breakages were indicated only by lung full of water, which tend to be fatal.