A deep inlet of water is typically called a "fjord." Fjords are characterized by steep cliffs or slopes and are often formed by glacial activity. They are commonly found in regions with significant glacial history, such as Norway, New Zealand, and parts of Canada. Another term that can refer to a deep inlet is "bay," though bays may not always have the same depth or steepness as fjords.
the strip of water that connects two (large) waterways is called a strait.
Fjord
The part of a large body of water that extends into a coastline is an inlet. A deep inlet may be called a gulf.
an inlet of water named after Henry Hudson
The duration of An Inlet of Muddy Water is 2.17 hours.
An Inlet of Muddy Water was created on 1953-11-23.
Water head is the vertical height of inlet of water supply from the bottom of the storage tank to the inlet of the Cistern.
fjord
Ocean convection currents move the deep cold water to the surface of oceans.
firth
A long, narrow, deep inlet of the sea between steep slopes
The word is ria. It means a long, narrow inlet.