Dublin Bay in the context of "River Liffey"

The Irish Sea is a 46,007 km (17,763 sq mi) body of water that separates the islands of Ireland and Great Britain. It is linked to the Celtic Sea in the south by St George's Channel and to the Inner Seas off the West Coast of Scotland in the north by the North Channel. Anglesey, North Wales, is the largest island in the Irish Sea, followed by the Isle of Man. The term Manx Sea may occasionally be encountered (Welsh: Môr Manaw, Irish: Muir Meann Manx: Mooir Vannin, Scottish Gaelic: Muir Mhanainn).

On its shoreline are Scotland to the north, England to the east, Wales to the southeast, Northern Ireland and the Republic of Ireland to the west. The Irish Sea is of significant economic importance to regional trade, shipping and transport, as well as fishing and power generation in the form of wind power and nuclear power plants. Annual traffic between Great Britain and Ireland is over 12 million passengers and 17 million tonnes (17,000,000 long tons; 19,000,000 short tons) of traded goods.

Dublin is the capital and largest city of Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the province of Leinster, and is bordered on the south by the Dublin Mountains, part of the Wicklow Mountains range. Dublin is the largest city by population on the island of Ireland; at the 2022 census, the city council area had a population of 592,713, while the city including suburbs had a population of 1,263,219, County Dublin had a population of 1,501,500. Various definitions of a metropolitan Greater Dublin Area exist.

A settlement was established in the area by the Gaels during or before the 7th century, followed by the Vikings. As the Kingdom of Dublin grew, it became Ireland's principal settlement by the 12th century Anglo-Norman invasion of Ireland. Dublin expanded rapidly from the 17th century and was briefly the second largest in the British Empire and sixth largest in Western Europe after the Acts of Union in 1800. Following independence in 1922, Dublin became the capital of the Irish Free State, renamed Ireland in 1937. As of 2018, Dublin was listed by the Globalization and World Cities Research Network (GaWC) as a global city, with a ranking of "Alpha minus", which placed it among the top thirty cities in the world.

Bull Island (Irish: Oileán an Tairbh), more properly North Bull Island (Oileán an Tairbh Thuaidh), is an island located in Dublin Bay in Ireland, about 5 km long and 800 m wide, lying roughly parallel to the shore off Clontarf (including Dollymount), Raheny, Kilbarrack, and facing Sutton. The island, with a sandy beach known as Dollymount Strand running its entire length, is a relatively recent, and inadvertent, result of human intervention in the bay. The island lies within the jurisdiction of, and is mostly owned by, Dublin City Council, and is managed by the Council's Parks and Landscape Division.

Bull Island, which is accessed by way of a causeway bridge from Raheny and a wooden bridge from Clontarf, has the most designations of any site in the country, as a National Bird Sanctuary, a biosphere reserve, a National Nature Reserve, a Special Protection Area under the EU Birds Directive, and a Special Area of Conservation under the EU Habitats Directive, while also being the subject of a Special Amenity Area Order. It is a car-free zone. It holds a wide variety of plant and bird species, and a limited range of mammals, one reptile, one amphibian and a modest range of invertebrates; one mammal species, the hare, became extinct in the later 2010s.

Dollymount (Irish: Cnocán Doirinne), often known as "Dollyer" to Dubliners, is a coastal suburban area on the north coast of Dublin Bay, within Clontarf, on the northside of Dublin, Ireland, just east of Saint Anne's Park.

Howth (/ˈhoʊθ/ HOHTH; Irish: Binn Éadair, meaning 'Éadar's peak'; Old Norse: Hǫfuð) is a peninsular village and outer suburb of Dublin in Ireland. The district as a whole occupies the greater part of the peninsula of Howth Head, which forms the northern boundary of Dublin Bay, and includes the island of Ireland's Eye, which holds multiple natural protection designations.

Howth has been settled since prehistoric times, and features in Irish mythology. A fishing village and small trading port from at least the 14th century, Howth has grown to become a busy and affluent suburb of Dublin, with a mix of suburban residential development, wild hillside and heathland, golf courses, cliff and coastal paths, a small quarry and a busy commercial fishing port. The only neighbouring district on land is Sutton. Howth is also home to one of the oldest occupied buildings in Ireland, Howth Castle, and its estate.