Supported by SAS GREENOV-ITES, the MALO project aims to reduce the impact on marine ecosystems and fish stocks of underwater noise emitted by offshore wind farms in operation through a solution based on metamaterials. The objective of the MALO project is to characterise, quantify and evaluate the impact of the different noise sources emitted by offshore wind turbines in operation on the underwater environment, to create a digital noise propagation model in order to design an innovative acoustic mitigation solution based on metamaterials on a reduced scale that will be tested in the basin. The data acquired during the project will also improve knowledge of wind turbines in operation, in particular in vibro-acoustics, and can be used for transversal and interdisciplinary subjects related to mechanics, structure, but also predictive maintenance. The amount of ERDF aid proposed to support this industrial research project, which falls within the theme of the ecological transition and the marine renewable energy sector, amounts to €490,000 out of an estimated budget of €700,000 excluding tax. The project is part of three regional smart specialisations: advanced production technologies, the maritime economy and the energy of tomorrow; it is also in line with the selection criteria of the 2023 ERDF RD call for projects and Action 1.1.3 of the 2021-2027 Regional Programme to support RD projects leading to societal and economic innovations.