What Is the Most Important Sea for Wales?

Wales does not have its own sovereign sea; it is a constituent country of the United Kingdom. However, its entire western and northern coastline borders the Irish Sea (separating Wales from Ireland). To the south, the Bristol Channel (an inlet of the Celtic Sea / Atlantic) forms the boundary with England.

The Irish Sea is the most significant maritime feature for Wales—economically (ports of Holyhead, Fishguard, Milford Haven, Cardiff, Swansea), ecologically, and culturally. Ferries to Dublin and Rosslare run from Holyhead and Fishguard. The sea defines Wales' western identity.