This study completed the setting up of a floating aquaculture facilities in the offshore wind farm of Miaoli on May 7, 2020, for breeding experiment on shellfish such as Crassostrea angulata, Pinctada margaritifera, Perna viridis and Sargassum hemiphyllum var. chinense. Shellfish growth and mortality surveys were conducted on 1 July and 17 September 2020. The single oyster grew at a rapid rate (9.2-9.9 mm/month) with low mortality rates (3.3-8.3%) during the survey on July, but the mortality rate increased significantly when the Platyhelminthes appeared in September. The traditional-cultured oysters reach harvest length after 2 months, the average shell length increased from 23 mm to 55.5 mm. The culture cage of Pinctada margaritifera was disappear, and was not possible to investigate its growth and death. The mussels of Perna viridis grew to 55.8±7.9 mm during the survey on September, with a growth rate of 0.8 mm/month, and its cumulative mortality rate was only 7.8%. There were many seedlings of Perna viridis with shell lengths less than 1 cm were found in the cage. The Sargassum hemiphyllum var. chinense algae broke in the leaf-like part, and no new leaf-shaped ministerial out has yet been observed.
In the offshore wind farm of Miaoli, the contents of metals in seawater were low, and the contents of Ni, Cu, Cd, Pb, Cr, As, Hg, Zn in the bottom mud were lower than the limits of "soil pollution control standard" for agricultural land of edible crops. The contents of metals in the traditional-cultured oyster was lower than the limit of the Ministry of Health and Welfare's specifications after 4.5 months of breeding.
The 3D-printed seedling equipment was used in the seedling test in the traditional oyster farm of Changhua Wanggong, and attached to a large number of oyster seedlings. This attached oyster can be peeled off artificially to produce a large number of single oyster seedlings, and can be used in offshore wind farm breeding.