The #atlantic and #pacific Oceans do not mix due to differences in salinity, temperature, and density of water in these two oceans. The Atlantic Ocean is saltier and denser than the Pacific Ocean, creating a rough margin along its waters called Halocline. This difference in salinity prevents the two oceans from mixing, even though the water from the two oceans does mix but at a much slower rate.

The mix of water from the two oceans is also hindered by differences in water density, caused by variations in temperature and salinity, resulting in a phenomenon known as thermohaline circulation. Additionally, the difference in the density between the water from the Atlantic and Pacific Oceans is not significant enough for one to sink and the other to rise, which further prevents the mix.

In conclusion, the Atlantic and Pacific Oceans don't mix due to differences in their chemical properties that cause them to behave differently. The main factors that prevent the mix of the two oceans are differences in salinity, temperature, and density of water in the two oceans, resulting in a phenomenon called thermohaline circulation.