Abstract: A desalination system comprising at least one water-containing vessel adapted to be immersed into a body of sea water, an inlet at the lower end of the vessel, pump means for removing water from the vessel, valve means for selectively enabling and preventing flow of sea water into the vessel via the inlet under the effect of hydrostatic pressure, and a desalination plant powered by water flowing into the vessel when the valve means is open.

Abstract: A system for generating power, including: a barrier partially dividing a body of water subject to tidal effects into two regions of water such that said regions of water have differing water levels over a tidal cycle; a passage in said barrier for placing said regions of water in fluid communication with each other; and means within said passage responsive to flow of water for driving a power generation means; wherein water flows from one of said regions of water to the other of said regions of water via said passage when said regions have differing water levels during said tidal cycle.

Abstract: A system for generating power, including: