Did you know that where the waters of the Atlantic Ocean meet the Pacific Ocean, there actually is a visible border?
Below is a video showing the border between the Atlantic Ocean (light green color) and the Pacific Ocean (darker blue color).
https://youtu.be/bK7PBIOn2Rc
Rickie Anderson writes for Healthy Water Guide, November 27, 2020:
The Pacific and the Atlantic are the vastest oceans in the world. In a nutshell, the Pacific and the Atlantic Ocean border goes from Cape Horn, the tip of the Tierra del Fuego archipelago in South America, to Antarctica’s shores.
This border space is where the Atlantic and the Pacific Ocean meet. The area of sea is the Drake Strait or passage, named as such for Sir Francis Drake. Drake was an explorer during the Elizabethan era (the 16th century)….
The water of the Atlantic Ocean is denser than that of the Pacific as it contains more salt. The Atlantic is also much colder than the Pacific, which also makes its waters more condensed. The two different currents run into each other at Cape Horn….
Sometimes, yes, the oceans do appear to be different colors. This distinction happens when events like silt and sediment from melting glaciers or rivers washing down into the oceans occur.
For a while, the oceans will appear to be different hues until they blend. The appearance of varying shades of the sea does not last, however. Eventually, the waters of the two different oceans do merge.
Here’s another explanatory video, showing 15 other borders between two waters:
https://youtu.be/U93QRMcQU5Y
~E