A positive relationship is shared between the temperature and saltiness of the oceans waters. As density increases, the saltiness in oceans waters does too.
Saltiness descreases when polar caps melt or increases from the freezing of polar caps. Evaporation can increase saltiness and density too and in turn freshwater decreases saltiness and density.
(Sorry this is all I could find about relationships between the oceans waters and the dissolution in oceans water salts. (
I found the answers on marinebio.org and I am claiming here that these answers are not my own but information I found from this site and I hand all credibility to the author whom published this page on this site)