My research focuses on the hydrodynamics and morphodynamics of estuarine and coastal systems, with the aim of improving our understanding of how water motion, sediment transport, and morphological evolution shape these environments. I combine physics-based numerical modelling, in-situ observations, and remote sensing to investigate the processes governing shoreline evolution, channel migration, sediment deposition, and erosion under both typical and changing environmental conditions. A core component of my work involves the development and application of 2D/3D numerical models (TELEMAC-2D/3D+GAIA and TOMAWAC) to simulate estuarine flows, salinity intrusion, sediment transport, and bed evolution. I analyse the interactions between tides, waves, river discharge, and morphology over multiple spatial and temporal scales, and I model episodic or extreme events—such as storms and floods—to assess their morphological impacts. In addition, I study the dynamics of seasonal and intermittently open inlets, examining their opening and closure cycles, sediment exchanges, and sensitivity to hydrodynamic forcing. Overall, my work advances process-based understanding of estuarine behaviour and supports the development of sustainable management strategies for these vulnerable environments.