The Mediterranean-though it is shared with parts of Asia and Africa. The largest sea entirely in Europe would be the North Sea.
Aberdeen is the third-largest city in Scotland called the Oil Capital of Europe or the Energy Capital of Europe. Oil was discovered here in the North Sea in the 1970's.
The largest sea is not on the border of Asia and Europe as the largest sea is the South China Sea, on the coast of China. You may be referring to the Caspian Sea, often regarded as the world's largest lake, which is an inland sea.
The Mediterranean Sea.
The North Sea.
Oil and natural gases.
Western Europe produces more oil than Eastern Europe. The main oil supplier in Western Europe is the North Sea, while it's the Black Sea and the Caucasus in Eastern Europe.
The Mediterranean Sea, the Barents Sea, the North Sea, and the Kara Sea are all large seas around Europe.
The Mediterranean Sea is the largest body of water separating Africa and Europe.
North Sea oil and gas
Europe's most useful oilfield is in the North Sea.
Oil and natural gas, as well as fish.