. . . "Salinity is the saltiness or dissolved salt content of a body of water (see also soil salinity).Salinity is an important factor in determining many aspects of the chemistryof natural waters and of biological processes within it, and is a thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water.A contour line of constant salinity is called a isohaline \u2013 or sometimes isohale."@en .