...Where Two Oceans Meet???

Have you ever seen the picture below?





It's a picture taken in the Gulf of Alaska. The picture is said to represent where two bodies of water merge but not actually mix.

Actually, the lighter-shade of blue represents glacial sediment containing iron that is flowing from one of Alaska's rivers into the Gulf of Alaska. While the snapshot seems to depict a boundary or demarcation separating the two, they eventually do mix and the sediment line is not stationary.

There are actually several of these 'where two oceans meet' phenomena. Here is another...




In this case above, we call this a confluence of two rivers. Also, the confluence of the Ohio and Mississippi rivers results in a similar phenomenon...



taken from Earth Observatory

MS