A sea-loch is a narrow inlet of seawater that penetrates into the land, forming a long, narrow body of water. It is a unique geological formation found in Scotland and other coastal areas. Synonyms for sea-loch include fjord, sound, inlet, bayou, estuary, cove, and arm. These terms are often used interchangeably to describe a body of water that is connected to the sea but is narrower and longer than a typical bay. The term "sea-loch" is most commonly used in Scotland and is often associated with the rugged and beautiful coastline of the country.