The Boyne Estuary is the expansive tidal mouth of the River Boyne where it meets the Irish Sea, forming the natural border between Counties Meath and Louth. This dynamic saltwater environment transitions from the river channel through mudflats and into open coastal waters, offering a mix of sheltered estuary fishing and more exposed shoreline angling. The area is historically significant and provides diverse opportunities for targeting migratory and resident saltwater species from both boat and shore.