Sea water from PVC taps flowing into abalone tanks, aquaculture

sea water aquaculture abalone farm abalone tanks intensive farming seafood pvc taps flow sealife telephoto aerated bubbling blue pipes aquafarming ulva aquiculture aeration fishery aquafarm bubbling tank commercial husbandry farmed exported species commercial farming south african abalone tanks south africa commercial farm aqua farm seawater tank bubbles farming hermanus industry perlemoen farm aerated tank shellfish marine life asian delicacy green seaweed nori