They're called " Barrier Islands "
Source: I study geographic features of North America
A long, narrow island that is created by the depositing of sand in shallow water is called a "sand bar." Sand bars can be found at the mouths of rivers, as well as in lakes or oceans.
Barrier islands.
A Tidal Bore is a wave that forms when a rising tide enters a shallow, narrow river from a wide area of the sea.
This Narrow Road was created in 2001.
The Narrow Way was created in 1969.
The Narrow Valley was created in 1921-06.
Lagoon
A strait.
An Isthmus
Narrow Stairs was created on 2008-05-12.
The Narrow Margin was created on 1952-05-04.
Narrow-Headed Vole was created in 1779.