As part of their energy transition policies to reduce greenhouse gas emissions, the effect of which on global warming has now been proven, both Europe and Japan are turning to the development of renewable marine energy. Among these, development of marine wind farms in coastal areas is a selected production method, as well as the installation of tidal turbines in areas with strong currents (such as the Raz Blanchard in the English Channel). This development is taking place in a context of very strong artificialisation of these ecosystems, which are very often the sites of traditional activities such as fishing and oyster farming, which the public authorities are asking to make considerable efforts to ensure their sustainability and minimise their ecological impacts (see topic 1). Hence the problem of cohabitation between traditional and emerging activities, as well as the impact of these new forms of energy production on ecosystems already heavily impacted by numerous activities.
Key words: Marine renewable energies, effects and impacts on socio-ecosystems, conflicts of use and space between the development of marine wind farms and traditional activities, complementarities and associations between these production methods.
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