The PURE WIND three year JPI Oceans project will quantify key features of radiated noise from fixed and floating offshore wind farms, to increase understanding and simulate cumulative effect of clusters on radiated noise, helping to identify sensitive habitats in cross-basin soundscapes. From the biological perspective, the project will identify spatial and qualitative use of offshore wind by top predators (seals and harbour porpoise) and study the impacts of the related noise on zooplankton behaviour. These efforts will advance the knowledge of acute and cumulative effects of the operational noise of offshore wind energy across pelagic food webs.