Brittany lies between this body of water and the Bay of Biscay.
Ushant and the Isles of Scilly mark the western entrance of this body of water. The Bay of Saint-Malo and Lyme Bay lie at the ends of its widest point. The Balliwicks of Guernsey and Jersey lie within it, as does the Isle of Wight. Folkestone and Coquelles are linked by an underground tunnel under it. Brittany lies between this body of water and the Bay of Biscay. Connecting the Atlantic Sea and the North Sea, Calais lies near its narrowest point, the Strait of Dover. For 10 points, name this body of water separating France and Britain.
Ushant and the Isles of Scilly mark the western entrance of this body of water.
{English Channel} or La {Manche}