A global system of these structures can easily accommodate many millions of people and relieve the land based population pressures. They can provide the inhabitants with information and serve as natural sea aquariums without artificially enclosing marine life.
Many of these cities may serve as oceanographic universities that maintain the ecological balance of marine systems. Other ocean cities will maintain sea farms that will cultivate many forms of marine life. They could also be used as a new resource for mining the relatively untapped resources of the oceans without disturbing its ecology. Still others may monitor and maintain environmental equilibrium and reclaim dangerous radioactive and other pollutant materials that have been dumped into the sea.
After construction, these structures can be towed to various locations where they would be most beneficial, then anchored to the ocean floor. Some structures will be towed in prefabricated segments and then joined together at selected locations. Their internal construction will include floatation chambers which will render them practically unsinkable. They can be self maintained and fully automated.