delta
Strait
A strait or, sometimes, narrows.
A strait is a narrow body of water that connects an enclosed sea with a larger body of water, such as a sea or ocean. It is typically formed by natural forces like tectonic activity or erosion and serves as a vital passageway for marine traffic. Examples include the Strait of Gibraltar and the Bosphorus Strait.
It could be a Norwegian Fjord, a Scottish sea-loch, an inlet, a narrow bay. Even a river estuary (the River Mersey, England, is one example), where sea-water is mixed with river water to form brine, yet the estuary is still enclosed partly by land.
The name for a narrow body of water that connects an enclosed sea with a larger body of water is a strait. An example would be the Strait of Gibraltar that connects the Mediterranean Sea and the Atlantic Ocean.
bay
A large deep stretch of sea mostly enclosed by land with a narrow opening is called a "bay." Bays are typically characterized by their curved shorelines and can serve as safe harbors for ships. The narrow opening connects the bay to a larger body of water, such as an ocean or sea, allowing for the exchange of water and marine life.
A narrow stripe of land that connects 2 large bodies of water is an isthmus.
A narrow portion of land partly surrounded by water is a peninsula A narrow portion fo land completely surrounded by water is an island
A strait.
low land covered by water
a body of water