The opening of a lagoon estuary mouth to the ocean as the tide flows in

lagoon river mouth sea ocean tidal sediment sand beach breach water rain estuary channels fishing ecosystem marine banks dunes waves currents flood wash flow salt fresh patterns coastal confluence delta coastal management hydrology natural phenomenon inlet water dynamics coastal ecosystem marine life saltwater intrusion coastal erosion sediment transport delta formation aquatic habitat tidal exchange ecological balance shoreline transformation estuarine environment geographical shift environmental impact spectacular natural event