The bay is rather shallow with many sandbanks and rocky outcrops, and was notorious in the past for shipwrecks, especially when the wind was from the east. Until modern times, many ships and their passe… See more

Dublin Bay was first settled c. 4000 BC, in Ireland's Mesolithic. Ptolemy's map of Ireland (AD 140)places a settlement called "Eblana" and a river Oboka in the region of Dublin Bay. In the 9th century AD, the Vikings sett… See more

Dublin Bay has a significant flow of shipping, mostly freight but also including passenger (car) ferries and cruise ships. The port authority offers pilotage where needed. Multiple lighthouses help secure passage, a… See more

Coastal flooding can occur at high tide at several points, notably the city side of Clontarf, and Sandymount. See more

The bay has been subject to pollution from the inflowing watercourses, shipping and port activity, the main water treatment plant for Dublin and sewage discharges at other points, and at times some of its bathing areas are u… See more