Sea water

Sea water is water commencing a sea or ocean. On usual, sea water in the world's oceans has a salinity of ~3.5%. This means that for each and every 1 liter (1000mL) of sea water there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it. This can be articulated as 0.6M NaCl. Water with this level of osmolality is, of course, not potable.

Sea water is not homogeneously saline throughout the world. The planet's freshest sea water is in the Gulf of Finland, division of the Baltic Sea. The most saline open sea is the Red Sea, where high temperatures and confined movement result in high rates of surface evaporation and there is little fresh inflow from rivers. The salinity in isolated seas (for example, the Dead Sea) can be significantly greater.