A narrow water passage is a type of waterway that is typically very narrow and shallow. A STRAIT is a narrow water passage that connects two larger bodies of water, such as two seas or an ocean and a sea. An INLET is a narrow water passage that is usually found along a coastline and is connected to a larger body of water. A CHANNEL is a narrow water passage that is typically found between two land masses, such as two islands or a mainland and an island.