A wall of sea water rushing up into an embayment?

A wall of sea water rushing into an embayment typically signifies a phenomenon known as a tidal bore or a storm surge, where incoming tides or storm-related conditions cause a sudden influx of water. This can lead to rapid changes in water levels, potentially flooding low-lying areas, and creating strong currents. Such events can pose significant risks to coastal ecosystems and human infrastructure, necessitating careful monitoring and preparedness in affected regions.