The waters of lakes, seas and oceans of the northern hemisphere rotate counterclockwise, while the waters of the southern hemisphere rotate clockwise, forming giant whirlpools. https://en.m.wikipedia.org/wiki/Ocean_gyre

As you know, everything that rotates, including whirlpools, has the property of a gyro (yule) to maintain the vertical position of the axis in space, regardless of the rotation of the Earth.

If you look at the Earth from the side of the Sun, the whirlpools, rotating together with the Earth, overturn, due to which the whirlpools precess, and as a result there is a vertical movement of oceanic waters. http://goo.gl/AM5g1s

The presented theory can be easily verified by the connection between the oxygen content and the rotation speed of the whirlpools.
Drawing on a map of the depths and currents of the seas and oceans.
The higher the flow velocity, the greater the oxygen content and the lower the hydrogen sulfide content.

List of seas with low oxygen content:
Black Sea. East of the Mediterranean Sea. Gulf of Mexico.
Fjords of Norway.

The opening was published in the Russian-German scientific peer-reviewed journal "Eastern European Scientific Journal" No. 3/2015. 64. June
http://www.auris-archiv.de/journal.html
A positive review was also received from the Institute of Geography of the Russian Academy of Sciences.
Forum SPbSU Faculty of Geography.
http://www.spbgu.ru/forums/index.php?showtopic=53992