On Wednesday May 3 from 10am to 12.30 in the WMO Press Room, there will be a Marine Seminar by both WMO and visiting staff from UNESCO’s Intergovernmental Oceanographic Commission (IOC). The Seminar will be chance for exchange of information and discussion between the two agencies, as outlined in the attached programme. From the UNESCO-IOC, Dr Albert Fischer, Dr Salvatore Arico and Dr Thorkild Aarup will share information about IOC programs relevant for WMO, and vice versa, WMO staff will share information on their marine work here. UNESCO IOC is an important partner to the WMO, across a myriad of marine related activities including services, data and observations. Testament to this strong partnership and complementary work, is the fact that the former WMO Technical Commission for Marine Meteorology (CMM) was officially combined in 1999 with the IOC to form the WMO / UNESCO-IOC Joint Technical Commission for Oceanography and Marine Meteorology (JCOMM). In addition, there are clear synergies between other IOC and WMO activities related to disaster risk reduction, polar regions, SIDS and capacity development. This Seminar is also timely, ahead of the UN Ocean Conference (https://oceanconference.un.org/) which will be held in New York in June, during which both WMO and IOC will be represented.