The WES project has committed to provide technical assistance and strengthen the capacities of the WES Partner Countries to effectively address the issue of microplastics in the Mediterranean marine environment. In line with this commitment, a Regional Training began on 12 May to enhance the competences of policy makers and other stakeholders along the plastic value chain on technical aspects of microplastics (definitions, types, pathways, impact, etc.); monitoring approaches and knowledge gaps; links between microplastics and chemical pollution; the pros/cons of potential measures; policy options and decision-making based on sound scientific evidence.