Since the introduction of the First World Ocean Assessment (WOA I) that provided a comprehensive report on the state of the planet’s oceans for the first time, the second report has just been consolidated and launched as the Second World Ocean Assessment (WOA II), the major output of the second cycle of the Regular Process for Global Reporting and Assessment of the States of the Marine Environment, including Socioeconomic Aspects, in connection with Earth Day 2021 which will be observed on 22 April. It is the newest outcome of the only integrated assessment of the world’s ocean at the global level covering all three pillars of sustainable development.