This class includes:
——fish farming in sea water including farming of marine ornamental fish
——production of bivalve spat (oyster mussel etc.), lobsterlings, shrimp post-larvae, fish fry and fingerlings
——growing of laver and other edible seaweeds
——culture of crustaceans, bivalves, other molluscs and other aquatic animals in sea water

This class also includes:
——aquaculture activities in brackish waters
——aquaculture activities in salt water filled tanks or reservoirs
——operation of fish hatcheries (marine)
——operation of marine worm farms

This class excludes:
——frog farming, see 0322
——operation of sport fishing preserves, see 9319