An inlet is a typically long and narrow indentation of a shoreline such as a small arm, cove, bay, sound, fjord, lagoon or marsh, that leads to an enclosed larger body of water such as a lake, estuary
Hillsboro Inlet
…Hillsboro Inlet in Pompano Beach, Florida, is an inlet from the Atlantic Ocean that connects the Atlantic to the Intracoastal Waterway. Hillsboro Inlet Light…
Bay at the Gulf of Salerno, Italy
The Jersey Shore extends inland from the Atlantic Ocean into its many inlets, including Manasquan Inlet, looking westward at sunset from the jetty at Manasquan, New Jersey, U.S.