A pool of shallow water connected to the sea is called a tide pool. There are some fish which live here and are known as offshore fish.
estuary
lagoon
A strait.
The narrow strip that separates Spain from Africa is the Strait of Gibraltar.
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.
cows rock
It is called the Peloponnesus.
It is called the Peloponnesus.
The narrow band of shallow water along the beach is where the waves break. This is called the surf zone.
That is called a fringing reef.
A narrow gap in a mountain range is called a pass or a mountain pass.
A Tidal Bore is a wave that forms when a rising tide enters a shallow, narrow river from a wide area of the sea.
Pass
They're called " Barrier Islands "Source: I study geographic features of North America