Yser
A North Sea Feeder beginning with the letter Y could be the York River estuary, which connects to the North Sea via the Humber Estuary in England.
Elbe
The Meuse River flows into the North Sea. It begins with the letter M.
Some sea birds with four letters are: - Erne - Tern - Gull
azov sea...is the four letter sea in russia
Cuba
Black sea Baltic sea Mediterranean sea North sea
Sand? Spit? Isle?
North Sea Baltic Sea White Sea Barents Sea
Caspian Sea feeder is a crossword puzzle clue with three possible answers as ural, uralriver and volgariver. The Caspian Sea is the largest enclosed body of water on Earth.
Bari is on the Adriatic Sea.
Those letters spell North Sea.