Celtic Sea, North Atlantic Ocean section between Ireland and Great Britain.
The Celtic Sea is a region of the North Atlantic Ocean situated between the southern coast of Ireland, Cornwall, and Brittany. These waters connect the Irish Sea with the open Atlantic, bounded to the east by the approaches to the English Channel and Bristol Channel.
The name was proposed in 1921 by marine biologist E. W. L. Holt during a meeting of fisheries experts in Dublin. Before that time, maps and specialists had no shared designation for these waters between the British Isles and France.
The waters contain the Isles of Scilly archipelago, featuring five inhabited islands and 140 rocky formations off the Cornwall coast.
The waters lie far from sheltered bays and are often exposed to Atlantic weather patterns. Visits to coastal areas allow observation of the sea's expanse and changing conditions with tides and wind.
The seabed slopes gradually southward, forming irregular structures as it descends. These depth changes influence currents and the way water moves and interacts with the coastlines.
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