We all know river water is not salty where as ocean water is salty. How come ocean water become salty?.Rain creates freshwater in rivers and streams, so they don’t taste salty.Rivers breaking up rocks while flowing and transporting their minerals to the ocean, the ocean has start become saltier.Over a period of time sea water become more salty.
River water also has salt in it but its very very less compared to sea.
All the ocean water will not have same level of saltines in water ,this is depends on how much fresh water flow in and how much water leaves the ocean by evaporation.