Celtic Sea

The Celtic  is the area of the Atlantic Ocean off the coast of Ireland bounded to the by Saint George’s Channel; other limits include the Bristol Channel, the  Channel, and the Bay of Biscay, as well as adjacent portions of Wales, Cornwall, and Brittany.

The southern and western boundaries are delimited by the continental shelf, which drops away sharply.

The Isles of Scilly are an archipelago of small islands in the .