More than 36 participants from 18 centres attended the meeting. The meeting was also attended by partners from UN Environment/Mediterranean Action Plan; the Minamata Secretariat (remotely); the Catalan Waste Agency; the Ministry of Agriculture and Fishery, Food and Environment of Spain and various agencies working on combating marine litter issues. First two days of the meeting was dedicated on following up on the decisions adopted by the 2017 COPs of the Basel and Stockholm conventions and preparation for the performance evaluation of the Centres by 2019 COPs. The third and last day of the meeting was focused on the marine litter issues.