‘titrebResume’/titrebIn research projects, a participatory foresight approach has been carried out to explore the possible future management of coastal waters in Roussillon, taking into account climate change. Four years after the end of the financial year, what are the traces and impacts? Have these moments of shared reflection changed the prospects and methods of action taken by stakeholders in terms of resource management? Based on the survey of participants, this article shows us that although the approach has had little effect on the professional relationships and behaviours of the participants, it has provided a better understanding of climate change and water issues.