Narrow passages of water that flow from the sea through rocky cliffs are known as

Fjord.

Explanation:

Are long and narrow inlets that are crate by the glacier's actions and are steep and are found along the coasts.Some examples of the fjords of Norway that run for 29,000 km. Formed by the glaciers U-shaped valleys and the ie segregation and process of abrasion. These are also created when the works of the glaciers tend to leave the valleys open and these valleys are flooded by the fjords, and these fjords hold freshwater that is log glacier-carved valleys.  They are located in the high middle altitudes and those reaching the 80°N during the glacial periods.

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