The UNDP/GEF Yellow Sea Large Marine Ecosystem (YSLME) Phase II Project launches today the first of its Information Series showcasing recent studies and actions being undertaken to address key challenges in the Yellow Sea region. This Information Series tackles Plastic and Microplastics, one of the defining challenges that we face globally today. In particular, this Information Series discusses the impacts and recent monitoring data from PR China and RO Korea on plastics and microplastics in the Yellow Sea area. The publication also highlights key actions being implemented in the region in line with the Sustainable Development Goal (SDG) 14.1 to significantly reduce marine litter by 2025, and provides key recommendations to guide future interventions towards a healthy, resilient and sustainable Yellow Sea region.