From 12 to 16 October 2020, Sea Tech Week^® will be taking a keen interest in marine renewable energies (MRE). During this 12^th edition, a virtual one-off, whose theme will be “Marine observation: from seabed to space”, the protagonists of this innovative network (companies, research centres, laboratories and large colleges) will be showcasing the fruits of their research. With its very special geographical location, Brittany boasts rather unique potential in terms of the production of marine renewable energies.