Back Keltiese See Afrikaans Mar Celta AN البحر الكلتي Arabic Mar Célticu AST Kelt dənizi Azerbaijani سلت دنیزی AZB Keltu jūra BAT-SMG Кельцкае мора Byelorussian Кельцкае мора BE-X-OLD Келтско море Bulgarian
The Celtic Sea (Irish: An Mhuir Cheilteach; Welsh: Y Môr Celtaidd; Cornish: An Mor Keltek; French: La Mer Celtique) is the area of the Atlantic Ocean off the south coast of Ireland. To the east of it are the Saint George's Channel, the Bristol Channel, the English Channel, and the Bay of Biscay, as well as adjacent portions of Wales, Cornwall, Devon, and Brittany. The southern and western boundaries are based on the continental shelf.