Estuary
I think that you mean where a river meets the ocean? Since the ocean and the sea are the same thing. It is called an estuary.
delta
a floodplane is when a river meets the sea or ocean
delta
at the mouth^^^Incorrect ! A river starts at its source - usually at a high place, such as a hill or mountain. It ends at the river mouth - which is where it meets the sea.
It Is Where the River Meets The Sea
At the coast. This is the term for where land meets the sea.
The mouth is the part of a river of stream where it meats a sea or ocean.
The ocean met the river mouth on the beach and the salt water and the fresh water mixed with the incoming tides.
which sea or ocean does the river yensei flow into
The River Darent
it is the mouth of the river; where it meets the sea