Ramin Atakishiyev, specialist of the Department of Caspian Hydrometeorology of the Institute of Geography named after Academician G.A.Aliyev, together with employees of the Department of the Caspian Integrated Environmental Monitoring, conducted studies using an unmanned vehicle on some sections of the coastline of the Apsheron Peninsula (the village of Jorat in the city of Sumgayit, the villages of Kurdakhany, Mardakan and Hovsan Baku city).

The purpose of the study is to know the causes of the appearance of various shades of color in the coastal areas of the Caspian Sea as a result of external interventions in pre-selected areas and to assess the pollution status of these areas.

The expert noted that during visual observations in the controlled area, it was recorded that the sea surface is brown, yellowish and blue in 3 shades up to a distance of about 150 meters from the coast, which at first glance allows us to conclude that the sea is polluted from various sources. When observed, the presence of a brown color at a distance of 10-50 meters from the coast indicates the presence of algae in this area, a yellowish color at a distance of 50-70 meters from the coast indicates the appearance of algae sand dunes at the bottom of the sea due to the 20-30 cm depth change in the area, and the blue color does not mean that the water in the open sea is transparent.

He also pointed out that the level of water pollution and the number of pathogenic bacteria were determined according to the results of chemical and microbiological analyzes carried out on a sample of sea water taken at a certain distance from the coastline.