What are Long and narrow sea inlets bordered by steep cliff?

A fjord is a long, narrow sea inlet bordered by steep cliffs. Fjords are typically found in high-latitude regions where glaciers have carved out deep valleys that have been flooded by the sea. Fjords are often very deep, and the water in them is often very cold. Fjords are also home to a variety of marine life, including fish, whales, and seals.