Ocean water can and will be used to replace diminishing terrestrial sources of fresh water. With more than 97 percent of all water being seawater and mostly unusable, mankind— all six billion of us—gets less than 1 percent for all its needs. An increasing number of agricultural, industrial, and personal water demands are vying for fresh water—a finite resource. Today, about half the world's population has no reliable water resources and the number of have-nots is growing. This is particularly evident in areas where more than 50 percent of the world's population lives within 100 miles of a coastline. This situation has already created political unrest and conflicts.
Conservation, wastewater recycling, and desalinization technologies have helped extend existing supplies, but the scale of these applications is not enough to solve future problems. Each of these reclamation schemes has been around for a long time, however, implementation has been limited to a few places in the world