Pollution of the marine environment by microplastics is a significant environmental problem. The objective of this study is to assess microplastic concentrations in the Azov Sea media, and to analyze their morphological and morphometric characteristics, degradation level and degradation pathways, as well as chemical composition. Microplastic was determined using the modified NOAA method. The average concentration of microplastic particles amounted to 69 pcs/kg in bottom sediments, 45.2 pcs/kg on beaches, 2.8 pcs/liter in Azov Sea water. Zones with increased level of microplastic pollution were identified. Analysis using stereomicroscope Micromed MS-1 var. 2C Digital revealed the predominance of translucent fibers up to 1 mm in size in all samples. Analysis using a VEGA II LMU scanning electron microscope revealed that the microplastic actively degrades in the marine environment, through delamination, cracking and splitting. Analysis using FTIR spectrometry identified the type of polymers including polystyrene, polyethylene, polypropylene, and others.