A fjord is a deep, narrow inlet of the sea that is surrounded by steep cliffs or mountains. These natural formations are typically created by the erosion of glaciers, which carve out valleys that later fill with seawater. Fjords are often characterized by their stunning scenery and can be found in various parts of the world, including Norway, New Zealand, and Canada. Fjords can vary in size and depth, with some being several hundred meters deep. They often feature unique ecosystems, supporting diverse marine and terrestrial life. The combination of fresh water from rivers and saltwater from the ocean creates a rich habitat for various species, making fjords important for both biodiversity and tourism.