Of the 61,000 km total length of the coastal coast of the Russian Federation, 25,000 km are severely eroding. Russian Arctic (permafrost) beaches are particularly vulnerable to erosion when thermokarst regions are encountered due to rising sea levels. Rapid coastal recession is caused by thermal abrasion of permafrost melting zones in unconsolidated sediment areas. As a result, the shoreline is regressing by 2.5 m per year in the Laptev Sea region.

From Kerch Strait to Psou River, the Russian Black Sea coast stretches for around 500 kilometers. Since there are no tides in the Black Sea, variations in the elements of the water balance define sea level variation. The annual variation along the coast is typically less than 1 m. Rocks that are easily eroded make up the northern portion of this shoreline; the average rate of coastal recession is 0.7 meters per year. After a flysch zone with abrasion cliffs and a 50 km long sand bay-bar system with dunes and beaches, there is a hilly coastline with gravel and pebble beaches.

Source:

Coastal erosion - Russia - Climatechangepost.com