At which location is the density of the ocean most likely to be the greatest

Tropical areas had the greatest density of ocean around the world.

Explanation:

Salinity and temperature determines the density of the ocean water. Temperature is inversely proportionated to the density of the ocean water which means temperature decreases and density increases. Salinity is the directly proportionated to the density of the ocean and average salinity of ocean is 35 ppm. High density ocean is easy to swim and person floats over sea water having high salinity. In tropical areas, more evaporation and less influx of fresh water makes the ocean as more dense.