the sea has salty water, because the salt content contained in it is stout. The saltiness of the seawater is typical. Many people think that if the sea water is fresh, the fresh water reserves on the surface of the earth will be abundant, there will be no barren deserts and dry plants and all the trees will grow shade so that the level of prosperity will be evenly distributed. indeed, it is their false estimate and ignores the wisdom contained therein. The wisdom is that sea water is calm water, if saltwater is not salty it will all be damaged and everything on earth will be destroyed. The marine salinity keeps the seawater quality itself so that it remains pure and clean, Allah has created the sea at sea in a variety of forms and other animals that live at sea.