Question

Why do tropical marginal water bodies have higher salinity than open ocean

Answer 1

The density of seawater plays a vital role in causing ocean currents and circulating heat because of the fact that dense water sinks below less dense. Salinity, temperature and depth all affect the density of seawater. ... This means it is denser than purewater. The higher the salinity, thehigher the density.

Answer 2

Places of higher salinity. There are parts of the ocean where hardly any rain falls but warm dry winds cause lots of evaporation. This evaporation removes water – when water vapour rises into the atmosphere, it leaves the salt behind, so the salinity of the seawater increases. This causes the seawater to become denser.

Hope this will help you..