PROBLEM TO BE SOLVED: To provide a culturing method, solving the problem that recently, with global warming, tropical and semitropical microbes and shellfishes settle along the coast, so that the growth of young shellfishes living in the sea off Japan in the past is retarded, especially in the Inland Sea, the Inland Sea has a little inflow of the component being the resource of the fish and shellfish from the river, and the ocean becomes oligotrophic to be a hindrance to culturing of fry or young shellfish.SOLUTION: According to A method for culturing fry or young shellfish, oxygen enrichment gas from a nitrogen gas production unit 6 used in an electric parts manufacturing factory 1, carbon dioxide gas exhausted from a stem boiler 9, retentate 3 discharged from a water purifying apparatus 2, and waste such as organic effluents discharged from a works cafeteria are respectively supplied as substances for accelerating the growth of the young shellfish by piping, whereby the substances for accelerating the growth such as dissolved oxygen necessary for growth can be supplied.
