Drinkable Sea Water
Before you scream ‘absurd’, let me tell you that I am talking about Puri – a sea water desalinating bottle. There are several ways to remove saline from sea water, for example evaporation, vapor-pressure, and ion-exchange membrane method but all of them are not practical for use on a life raft or rescue boat and require big equipments. The Puri on the other hand is a slim portable bottle that works with a pumping action. Take a look at its video below.
Read more at http://www.yankodesign.com/2013/08/05/drinkable-sea-water/#oU0ZjmoAIs8Cg0JJ.99