A system for separating liquids of different densities employs a collector shell (17) made up of smooth lines and curvatures. A fairing creates and controls the flow of the liquids (for example water and oil) by gathering, capturing and isolating one liquid beneath the surface of the other liquid (24). The trapped and water pressurized oil is extracted and transferred to a storage container (21). One embodiment, the collector shell (17) is a simple design yet complex in achieving a workable shape that can accomplish all of the above using a small number of moving parts all of which, with the possible exception of the collector shell (17) and the elevator screw (12) are off the shelf items. The collector shell (17) inherently suppresses turbulence. The accumulation of oil captured in the collector bowl (17d) remains in a state of semi-suspension in both rough and normal surface conditions. The only movement of the oil is in a vertical direction when the elevator screw (12) is in motion.