Ocealis-Consulting offers its scientific expertise in the marine and coastal environment in two main areas: the development of MRE and the adaptation of coastlines to climate change. To do this, the company relies on its expertise and scientific experience in the ocean environment, and on the development of new digital tools: UAV (flying drone) with Lidar and photogrammetric sensors for high-resolution 3D mapping, 360° camera with virtual reality headset, USV (floating drone) with multibeam sounder for bathymetry. The use of these new tools makes it possible to improve knowledge of the environment, to refine monitoring and ongoing transformations, to reduce acquisition costs and to explore unknown areas, all while being carbon-free.