'The underwater of Sydney Harbour has its own histories, visual and literary representations, and narrators, but its contributions to Australian culture are yet to be fully recognised. Among European narrators were dress-divers whose technologies enabled access to an otherwise alien, inhuman world. This article discusses early dress diving in Sydney Harbour, focusing on an account by the explorer, Frank Hurley (1885–1962), of diving at Shark Island in 1921. Hurley's account is compared to the experiences of the harbour's professional dress-divers. His departures from reality are read as a science-fictionalisation of Sydney's submarine realm influenced by Jules Verne (1828–1905).' (Publication abstract)