A landform characterized by a narrow inlet of the sea between cliffs is known as a fjord. Fjords are typically formed by the submergence of glaciated valleys, resulting in steep, dramatic cliffs on either side and deep, often warmer waters. These natural features are most commonly found in areas with a history of glacial activity, such as Norway and parts of New Zealand. Fjords are significant for their stunning scenery and biodiversity, serving as important habitats for various marine and terrestrial species.