Layers of the Ocean
The ocean’s waters form layers, with denser water at the bottom. The density of seawater is determined by temperature and salt content. Deep water is dense because it is cold. Surface water is generally salty because of evaporation. But the increase in density due to evaporation is more than offset by the decrease in density due to warming.
Topic: Earth Science
Keywords: Salinity, Seawater--Density, Oceanography, Ocean temperature