When you look at the seas and oceans on the map you might think that they just flow into each other. well, you will be amazed at how realistic the borders between them are!
You will be wonder; What could interfere with its mixing?😲
The actual things is that water can be different too. The water of the Atlantic and Pacific oceans have different density and chemical make-up, the level of salinity and other qualities. We can see by their colour that they are far for being the same. The borders between two bodies of water with different physical and biological characteristics are known as ocean clines.