...—The estuaries of the Ganges and Brahmaputra rivers... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...In rough weather they repair to sheltered bays, ascend estuaries,or follow the course of a river until they have advanced far inland...
Rev. C. A. Johns 「British Birds in their Haunts」
...Minke whales may also approach very close to shore andoften enter bays, inlets, and estuaries...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...He discovered themouths of most of the rivers that fall into the Gulf of Carpentaria,besides many harbours, bays, estuaries, and other geographical featuresupon the North Australian coasts...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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