a straight
A narrow stripe of land that connects 2 large bodies of water is an isthmus.
A strait.
A strait is a narrow body of water that connects two larger bodies of water. The opposite (a narrow piece of land that connects two larger pieces of land) is called an isthmus.
A strait
canal
A canal.
lakes
A strait or, sometimes, narrows.
Strait
A canal.
Strait
A strait or, sometimes, narrows.