The current nickname of the Earth as the "blue planet" will lose its relevance in a few decades. The direct reason for this is changes in the volume of the population and the conditions of distribution of phytoplankton in the World Ocean, the presence of which colors the water in different colors. It is possible that by the end of this century, orbiting satellites will see the "spotted" seas and will closely monitor the size and shape of these spots.
Phytoplankton need not only sunlight for life, but also carbon dioxide, plus nutrients dissolved in water. Their ratio largely depends on the state of currents, the rate of mixing of water layers of different depths and the volume of emissions absorbed by this medium. Microorganisms are very sensitive to changes in the ecosystem and are able to reproduce at a colossal rate, so even seasonal fluctuations become clearly visible.
The more phytoplankton, the better the aquatic environment reflects light and looks green from the outside. The average concentration of these animals gives a blue color, the cold and deep waters empty from plankton look blue. With a warming of the climate by 3 degrees from the norm, and now this value is already almost +1, 5 degrees, a multiple and widespread change in the color of the oceans and seas is predicted. And it will be a critical marker for future aquaculture development.
Scientists have developed the concept of observing satellites that can track changes in the color of the seas and send there either fishing fleets, or inspection, or garbage collectors. After all, where there is plankton, there is fish and other useful animals, but some types of seafood, on the contrary, prefer free waters. And changes in the concentration of plankton indirectly indicate disruptions in the process of carbon cycle in the planet's ecosystem, which requires, at least, close study, and as a maximum - immediate action.