The cultivation of Sargassum hemiphyllum var. chinense relied on both vegetative reproduction and gametogenesis. The seedlings were attached to ropes and then placed in the experimental infrastructure floating on sea surface during growing season(December). The offshore wind industry to some degree restricts the access of fishing vessels, and makes the area become a quasi-MPA. The cultivation of macroalgae in the area may play an important role in nursing and enhancement of inshore fishery resources.It grows well in Taiwan waters and is very efficient at taking up carbon dioxide during cultivation, therefore considered to have the potential in mitigating climate change through carbon sequestration. The cultivation techniques can be applied to revitalize abandoned fishing ports and the area of cultivation is ideal for hatchery release and the nursing of seedlings.