Any beach can be considered environmentally friendly, but the main criterion for such a definition today is the so-called "Blue Flag". This is an international award given to only those suitable beaches for swimming and has clean water and sand.
The beaches are awarded twice a year. June 5 - for beaches in the Northern Hemisphere. These are the countries of Europe, Canada, Morocco, and Tunisia. November 1 - for countries located in the Southern Hemisphere, in the Caribbean, New Zealand, South Africa.

A beach meeting most of the following criteria can be awarded a Blue Flag:
Water quality. It must meet the frequency of sampling, quality standards, and requirements for microbiological and physicochemical parameters and must not have discharge points for industrial and wastewater.

Ecology. The beach must have a manager, meet the standards for arrangement and operation, and cleanliness requirements. The beach should be free of algae and other natural debris. The beach should be equipped with many garbage cans, including containers for separate waste collection. And, of course, the garbage must be removed on time. Toilets with sewerage must be installed on the beach. Park accommodation is not allowed in the beach area. In addition, the beach administration is advised to monitor the coral reefs that are nearby.
Security. The beach must have a sufficient number of rescue stations, lifeguards, and the necessary rescue equipment.

Additional amenities. Availability of drinking water on the beach and access for sedentary groups of citizens.

In 2017, most blue flags can be found on the coasts of Spain, Greece, and Turkey. In addition to the leaders, the most significant number of blue flags will fly over France, Italy, Portugal, Denmark, Croatia, Ireland, and the United Kingdom. Russia this year was awarded only one flag. It will be installed on the beach in the Kaliningrad region in the village of Yantarny.