The 6th International Conference on Estuaries and Coasts (ICEC-2018) is co-organized by: - University of Caen Basse-Normandie (France) - GIS Hydraulics for Environment and Sustainable Development (France) - International Research and Training Center on Erosion and Sedimentation (IRTCES) under the patronage of the French society of HyfroTechnics (SHF) and the International Association the International Association for Hydro-Environment Engineering and Research (IAHR). The French GIS HEDD includes 34 French research institutions in hydraulic engineering, and national institutions such as IFREMER, IRSTEA, IFSTTAR, BRGM, etc. The GIS HEDD has been recognised and has the support of two French Ministries (Ministry of Research and Ministry of Ecology and Sustainable Development) to strengthen and extend research on Environmental Hydraulics in times of Global change, to bring scientific supports to public policies. ICEC-2018 will be focused on the theme “Estuaries and Coasts in times of Global Change”. Conference topics - Saline intrusion and sea level rise: measurements, modelling and forecasting their impacts to economic development and human lives; - Waves and Tsunami: Measurements, modelling, forecasting and warning system; - Estuarine and coastal flows and their evolution by climate change; - Sediment transport and morphological change in estuaries and coastal zones - Megacities development and coastal floods under the threat of sea level rise and climate change: Observation, modelling, forecasting and early warning systems; - Environment and ecosystem change in estuaries and coastal zones in time of global change; - Integrated Coastal Zone Management for sustainable developments in global change context. - Environment and Marine Renewable Energies.