Marine aquaculture is a production activity that uses coastal shallow tidal flats to cultivate marine aquatic economic animals and plants. Including shallow sea aquaculture, tidal flat aquaculture, harbor aquaculture and so on. The nets of the floating cages at sea are made of tough and firm materials that can store fish without escaping fish. The mesh wall is relatively thick, which can prevent the invasion of enemies. The water filtration performance is good, and it is not easy to be attacked and damaged by enemies, and it will not be damaged by mildew in seawater.