After the last ice age, as ice retreated whatever water that was there would have slowly connected to the Atlantic at its northern and southern ends, and changed from being an enclosed freshwater lake to being a sea.
The Celtic Sea and the Irish Sea.
Ireland is geographically part of the British Isles. So on that basis, there is no answer to the question. What you are referring to is the sea between Ireland and Britain. That is the Irish Sea.
The Irish Sea is the body of water that lies between Ireland and England.
The Irish Sea does, but at the northern end of it there is the North Channel and at the southern end is St. George's Channel, both of which are also between Ireland and Britain.The Irish Sea lies between the two.
Between England and Ireland in the middle of the Irish Sea
The Isle of Man lies between Britain and Ireland.
England and Wales are connected by land but there is a body of water between parts of England and Wales. The body of water between the south-west of England and the South of Wales is the Bristol Channel, it is not a sea. Though to the north of Wales there is the Irish Sea.
The Irish Sea, also known sometimes as the Manx or Mann Sea.
The Irish Sea separates the islands of Ireland and Great Britain. It is connected to the Celtic Sea in the south by St George's Channel, and to the Atlantic Ocean in the north by the North Channel.
The Irish Sea lies between England and Ireland. It would not be described as a strait as it is too wide.
You can only travel from England to Ireland by air or sea.
Yes. It is a island in the Irish Sea, lying between Ireland and England.