Irish Sea

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Lore & Background

The Celtic Sea receives its name from the Celtic heritage of the bounding lands to the north and east. E. W. L. Holt proposed the name at a 1921 meeting of fisheries experts from Great Britain, France, and the Republic of Ireland in Dublin. This sea's northern portion was considered part of Saint George's Channel, and the southern portion was an undifferentiated part of the Southwest Approaches to Great Britain. The desire for a common name came to be felt because of the area's common marine biology, geology and hydrology. It was adopted in France before being common in English-speaking countries. In 1957, Édouard Le Danois wrote, "the name Celtic Sea is hardly known even to oceanographers." Marine biologists and oceanographers adopted it, and later, by petroleum exploration firms. It is named in a 1963 British atlas, but a 1972 article states, "what British maps call the Western Approaches, and what the oil industry calls the Celtic Sea [...] certainly the residents on the western coast [of Great Britain] don't refer to it as such."

Reader's Guide

The seabed under the Celtic Sea is referred to as the Celtic Shelf, part of the continental shelf of Europe. The northeast portion has a depth of between 90 and 100 m (300–330 ft), increasing towards Saint George's Channel. In the opposite direction, sand ridges pointing southwest have a similar height, separated by troughs approximately 50 m (160 ft) deeper. These ridges were formed by tidal effects when the sea level was lower. South of 50°N, the topography is more irregular. Oil and gas exploration in the Celtic Sea has had limited commercial success. The Kinsale Head gas field supplied much of Ireland's demand for gas in the 1980s and 1990s. The water is too deep for fixed wind turbines. The area has potential for 50 GW of floating wind farms, and TotalEnergies plans a project with almost 100 MW. The Celtic Sea has a rich fishery with total annual catches of 1.8 million tonnes as of 2007. Four cetacean species occur frequently: minke whale, bottlenose dolphin, short-beaked common dolphin and harbor porpoise. Formerly, it held an abundance of marine mammals.

Did You Know?

• E. W. L. Holt proposed the name 'Celtic Sea' at a 1921 meeting of fisheries experts from Great Britain, France, and the Republic of Ireland in Dublin.
• In 1957, Édouard Le Danois wrote that 'the name Celtic Sea is hardly known even to oceanographers.'
• The Kinsale Head gas field supplied much of Ireland's demand for gas in the 1980s and 1990s.
• The area has potential for 50 GW of floating wind farms, and TotalEnergies plans a project with almost 100 MW.
• Total annual fish catches in the Celtic Sea were 1.8 million tonnes as of 2007.