But most worrying are the fish farms spread all over Taiwan's coastal regions. In some places, abalone pools have been dug into the marine erosion terraces, while in others illegal and excessive pumping of groundwater for aquaculture, along with extraction for domestic, industrial and agricultural use, has caused serious land subsidence in areas covering almost 1,000 square kilometers.
最令人憂心的是遍佈台灣島四周海岸的養殖漁業，部份是在海蝕平台上挖掘九孔池，部份則因民生、工業用水、農民、漁民自行超抽地下水，造成地層嚴重下陷已近達一千平方公里。