143K views · 2.1K reactions | These two oceans meet but do not mix in the Gulf of Alaska, USA. Why do these waters not mix? Science: Because there is a huge difference in salinity between the clear water that comes from melting glaciers, which is cool and low in salt, while the water from the second ocean has a high salt concentration. Therefore, the two oceans have different densities, which makes them almost impossible to mix. Credit: Comrade Phils | All Facts Newspaper | Facebook