Whether we call it God’s miracle or natural phenomenon, it is really very surprising to know that at the Gulf of Alaska, two oceans meet but never mix with each other. These two oceans are Pacific and Atlantic. It seems as if there is an unseen wall between them that prevents them from mixing. The Atlantic and Pacific oceans have different density and chemical make-up, the level of salinity and other qualities. Even the colours of both the oceans differ in great deal. The borders between the two bodies of water with different physical and biological characteristics are known as ocean clines.
Though the difference in density of waters of the two oceans is not that great for one of them to get down and the other to rise up and yet it’s enough to not let them mix. Another reason is inertia. One of the inertial forces known as Coriolis force influences objects when they are moving in a system of axes which, in its turn, is moving too. The Earth is moving, and all the objects on it will be acted upon by Coriolis force, deviating from their course. As a result, the objects on the Earth surface don’t move straight on but deviate in clockwise order in the Northern hemisphere and counterclockwise in the Southern. And this is why the direction of flows in the Atlantic and Pacific oceans is different. So it doesn’t let them mix. Another important difference between the two oceans’ water is the strength of molecules’ connection, or surface tensile strength. Molecules of a matter hold each other. The two oceans have a totally different surface tensile strength, and it also doesn’t let them mix.