We report the developments and results of the ECOMAR project, which have taken place 2018-2020 and was funded by THE VELUX FOUNDATIONS. ECOMAR has established state-of-the-art data sets for the distribution of human activities and pressures as well as ecosystem components in Danish marine waters. ECOMAR has mapped the combined effects of multiple human pressures, ranked pressures and analysed the potential effects of changes in pressure intensities and new human activities. ECOMAR has also outlined how zoning could be initiated in Denmark. Further, ECOMAR has modelled scenarios for 2030 and 2050 and concludes that agreed strategies and plans will probably not lead to reductions in human activities and pressures and accordingly unlikely to lead to improvements in environmental status.