The Marine Ecosystems-Challenges and Opportunities (MECOS), the third international symposium is to be held in Kochi.The symposium is conducted by the Marine Biological association of India between January 7, 2020 and January 10, 2020. Highlights: Scientists, Fisheries researchers, Marine biotechnologists and oceanographers from all over the world are to participate in the meet. The symposium will act as a common platform for the experts to discuss on climate crisis, unusual warming of Arabian Sea, ocean acidification, etc. SDG-14 The symposium is to focus on the Sustainable Development Goal of the United Nations, SDG-14. SDG-14 says, “Conserve and Sustainably use the oceans and its resources for sustainable development”.