Senior Research Fellow Vu Hai Dang took part in the Third Meeting of the Ad Hoc Open-Ended Expert Group on Marine Litter and Microplastics in Bangkok, Thailand, on 18–22 November 2019. The meeting was organised by United Nations Environment Programme, and the agenda was the implementation of the Resolution 4/6 of the 4th United Nations Environment Assembly held in March 2019. At the meeting, Dr Vu Hai Dang introduced CIL’s research on marine plastics—in particular the report ‘A Review of Research on Marine Plastics in Southeast Asia: Who Does What’—to national delegates, NGOs and industry representatives.