Dr. Thamasak Yeemin is a president of the Marine Science Association of Thailand (MSAT). He is also a Dean of the Faculty of Science, Ramkhamhaeng University in Bangkok, Thailand.

       He has worked in many aspects of ecology, biology, environmental science, socio-economics, coastal ecosystem management and marine protected areas for three decades in Thailand and other parts of the Western Pacific. He has provided expertise to several agencies for marine and coastal management, including local governments, national institutions, international organizations and NGOs, to design and implement management plans for coastal resources and the environment. He was a national focal point and a chairman of the regional working group for coral reefs under the UNEP/GEF Project on Reversing Environmental Degradation Trends in the South China Sea and Gulf of Thailand. He is also a founding member of the Asia Pacific Coral Reef Society and a former councilor of the International Coral Reef Society (ICRS). He has worked for some regional collaborative projects under international organizations, such as the ASEAN Center for Biodiversity, IOC WESTPAC, IMO, etc.