It is too difficult to combine the off-shore waters of the Gulf of Alaska and the glacial melt water due to their different salinity, temperature, and water density.
Source: Pinterest
Not all water is created equal. Ocean water varies widely in composition and temperature, and the various types of water don’t usually combine effectively. The fresh water flowing off a glacier melt has a very different viscosity and salinity than the salty seawater of the Gulf of Alaska, as this photo illustrates. Where the two types of water converge but do not mix, a clear line is the outcome.
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