channels
(a) Relatively narrow seas or stretches of water between two close landmasses and connecting two larger bodies of water; (b) Deeper parts of a moving body of water (as bays, estuaries, or straits) through which the main current flows or which affords the best passage through an area otherwise too shallow to navigate. [Glossary of Geology, 4th ed.]
This category is also used for chutes (hydrographic), cutoffs (hydrographic), inlets, lake channels, marine channels, narrows (hydrographic), navigation channels, reaches (hydrographic), sounds (bodies of water), and straits
