Estuary.
The littoral zone is the part of a sea, lake or river that is close to the shore
The Irish Sea and the Celtic Sea lie between Britain and Ireland, not a river.
The two rivers that lie between the Caspian Sea and the Black Sea are the Don River and the Volga River. The Volga River flows into the Caspian Sea, while the Don River flows into the Sea of Azov, which is connected to the Black Sea. These rivers are significant for transportation and irrigation in the region.
Between the sea and the shore
The River Thames flows into the North Sea between the Counties of Kent and Essex.
The Irish Sea between the Wirral & Liverpool.
affluent - sea water effluent - river water (the flow out of sea) influent - river water (the flow into sea)
the tropic zone
tidal zone sea creature
An estuary is typically located where a river meets the sea, providing a transition zone between fresh and saltwater environments. Estuaries are found along coastlines around the world.
There is no river between Rome and Carthage. The two cities are on opposite sides of the Mediterranean Sea.
The Rhine River is the main transport corridor between the Mediterranean and the North Sea. The Rhine is 1326 km and is one of the longest rivers in Europe.