inlet — an indentation of a shoreline, usually long and narrow; small bay or arm.
sound — The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. 87 miles (140 km) long; 3–30 miles (5–48 km) wide.
creek — A creek is a narrow place where the sea comes a long way into the land.
bay — A bay is a part of a coast where the land curves inwards.
mouth — Anatomy, Zoology. the opening through which an animal or human takes in food. the cavity containing the structures used in mastication. the structures enclosing or being within this cavity, considered as a whole.
waterway — a river, canal, or other body of water serving as a route or way of travel or transport.
arm — Your arms are the two long parts of your body that are attached to your shoulders and that have your hands at the end.
