Spending more time than your body would allow on its own underwater can be a tremendous experience, but current options like scuba diving are expensive with lots of other barriers of entry. This new prototype attempts to solve those issues. Designed in Austria, the ExoLung doesn't rely on compressed air tanks or battery power but instead translates your swimming motions into air movement to keep air flowing as long as you're swimming. The entire system weighs just under 8 pounds and the process is still in the prototype phase and awaiting a manufacturing and marketing partner.