How does the release of ballast water affect the Great Barrier Reef World Heritage Area?
Ballast water is used to alter the draft, trim and stability of a ship during cargo loading and unloading operations at port and at sea. The introduction of exotic marine species via ships ballast water has become a major environmental concern as it poses threats to local biodiversity, fisheries and aquaculture. Over 250 exotic marine pests (algae, invertebrates and fish) have been introduced to Australia via ballast water discharges and ship hull fouling.
