The Narrows is a significant tidal strait separating Curtis Island from the mainland in the Gladstone region of Central Queensland. This estuarine waterway functions as a crucial link between Gladstone Harbour and the Keppel Islands, characterized by extensive mangrove-lined banks, deep mud substrates, and shifting sandbanks. The entire area is a renowned fishing and crabbing ground, where strong tidal movements concentrate baitfish and predators, creating dynamic angling opportunities. The environment supports healthy seagrass meadows, which serve as vital nursery habitats.