To follow-up on the implementation of the voluntary commitments Conference in the outcome document of the June 2017 conference Our Ocean, Our Future: Call for Action, to catalyze and generate new voluntary commitments; and to facilitate collaboration and networking amongst different actors in support of SDG 14, the United Nations is launching nine thematic multi-stakeholder Communities of Ocean Action during a series of global webinars, including on ocean acidification and coral reefs which will take place on 27 November 2017, 02.00 PM – 03.30 PM (EST).