Graphics are different resolutions and FREE license
http://en.wikipedia.org/wiki/File:WOA05_sea-surf_SAL_AYool.png
Diagram showing concentrations of various salt ions in seawater: Cl− 55%, Na+ 30.6%, SO2−
4 7.7%, Mg2+ 3.7%, Ca2+ 1.2%, K+ 1.1%, Other 0.7%. Note that the diagram is only correct in units of wt/wt, not wt/vol or vol/vol.
