Seawater

Seawater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L). This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts, predominantly sodium and chloride ions.

References

This article uses material from the Wikipedia article Seawater, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).