The internet is now storming over this new underwater diving tank. This is portable, lightweight than the usual tanks and refillable via hand pump.
The project is funded by the kickstarter.
The SCORKL, is developed to be used by the trained diver mainly. but, as a new diver you will get instruction how you should use it. Refer to the FAQ section of their kickstarter page.
This is another great piece of tech we have seen this year.