Two Oceans That Never Mix: A popular myth says that two oceans come into contact but never mingle, forming a dramatic visual division between their waters. This occurrence, usually referred to as the meeting of the Atlantic and Pacific Oceans, has been fascinating many people. But scientific rationale says that even though the waters look different, they actually do mix in the long run.
The observable line of demarcation between two bodies of water is mostly due to variations in salinity, temperature, and sediment. Where freshwater from the melting glaciers or rivers dissolves into the ocean and there is a difference in density, the observable demarcation is created. This may be observed in regions such as the Gulf of Alaska. Where glacial meltwater is mixed with the ocean to create a distinct line.
Salinity Gradients: Fresh water is not as dense as salty seawater, and therefore they don’t mix right away.
Temperature Gradients: Hot and cold water also don’t mix right away because of the variations in their density.
Sediment Load: Rivers possess sediments that temporarily slow down mixing with ocean water.
Though dramatic visually, ocean currents and natural forces slowly intermix these waters. Mixing is brought about by wind-driven currents, the tides, and the Coriolis effect. The separation along viral photos is temporary and not a long-term divergence.
Most of the viral videos purporting to present the spot where the Atlantic and Pacific Oceans meet are actually presenting interactions between rivers and oceans. For example, both the Fraser River in Canada and the Congo River in Africa present the same effect when their freshwater blends with the ocean. Scientists argue that no two oceans are entirely disconnected from each other.
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The notion of two oceans never colliding is an intriguing myth and not a science fact. Contrasts in the nature of water produce transient visual contrasts but ultimate mixing is formed by natural forces. Examinations of these kinds of interactions between oceans reveal the dynamic character of the waters of Earth and the intriguing processes that control them.