TY JOUR TI Dynamics of Coastal Litter Density on the Beaches of the Northeastern Black Sea Coasts in 2016–2021 KW marine pollution KW marine beach litter KW Black Sea KW microplastics JO ECOLOGICAL SAFETY OF COASTAL AND SHELF ZONES OF SEA AU Spirina, V.A. AU Pogozheva, M.P. PY 2024 IS PB Federal State Budget Scientific Institution Federal Research Centre “Marine Hydrophysical Institute of RAS”