Evaporating the water sodium chloride remain as a residue.
The term is Desalination.
Desalination. Desalination is the process of removing salts and minerals from seawater to make it suitable for consumption or agricultural use.
Dissolved salts are transported by the rivers.
Precipitation, land water runoff and the melting of icebergs do not add salts to seawater.
Minor organic salts make up less than 1% of the composition of seawater.
Seawater is hypertonic to drinking water. This means that seawater has a higher concentration of solutes (such as salts) compared to drinking water. Drinking seawater can lead to dehydration as the body would need to excrete more water to get rid of the excess salts.
The average salinity of seawater is about 35 grams of dissolved salts per kilogram of seawater, or 3.5% by weight.
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Volcanoes add various salts to seawater, primarily including sodium, potassium, calcium, magnesium, and chloride ions. These salts are released into the ocean through volcanic eruptions, where gases and ash interact with seawater, or through hydrothermal vents on the ocean floor. The high temperatures and pressures associated with volcanic activity can also lead to the leaching of minerals from surrounding rocks, further contributing to the salinity of seawater.
It is dissolved salts, gases, and nutrients that are presented in seawater.
The most important is sodium chloride - NaCl.