Following is a list of organizations which helped in the previous East Asian Seas Congresses:

• ASEAN Ports Association
• Asian Fisheries Society
• Centre for Marine Environmental Research and Innovative Technology (MERIT)
• Coastal Habitats and Resources Management (CHARM)
• Coastal Management Center (CMC)
• Department of Sustainability and Environment (DSE)
• East Asia Response Pte. Ltd (EARL)
• Food and Agriculture Organization of the United Nations (FAO)
• GEF/UNDP/IMO Global Ballast Water Management Programme
• Southeast Asia START Regional Center (SEA START RC)
• Global Forum on Oceans, Coasts and Islands
• Global Environment Facility (GEF)
• Global Programme of Action for the Protection of the Marine Environment from Land-based Activities (GPA)
• Intergovernmental Oceanographic Commission of UNESCO (IOC)
• International Maritime Organization (IMO)
• International Marine Project Activities Centre (IMPAC)
• International Ocean Institute (IOI)
• International Petroleum Industry Environmental Conservation Association (IPIECA)
• Korea Environment Institute (KEI)
• Korea Maritime Institute
• Korean Ocean Research and Development Institute
• Marine Aquarium Council
• Marine Stewardship Council
• Network of Aquaculture Centres in Asia-Pacific
• Nippon Foundation
• Ocean Policy Research Foundation
• Parks Victoria
• Plymouth Marine Laboratory
• Reef and Rainforest Research Center
• IAEA/Regional Cooperative Agreement Regional Office (RCARO)
• Southeast Asia Regional Learning Centre (SEA-RLC)
• Southeast Asian Fisheries Development Centre (SEAFDEC)
• State Oceanic Administration (SOA)
• Thailand Environment Institute (TEI)
• United Nations Development Programme (UNDP)
• UNDP/GEF Small Grants Programme (SGP)
• Victorian Coastal Council
• The World Bank
• The Yellow Sea Partnership (YSLME)
• UN Ocean Atlas