This industry comprises establishments primarily engaged in the commercial catching or taking of finfish, shellfish, or miscellaneous marine products from a natural habitat, such as the catching of bluefish, eels, salmon, tuna, clams, crabs, lobsters, mussels, oysters, shrimp, frogs, sea urchins, and turtles. Cross-References. Establishments primarily engaged in-- ? Farm raising finfish, shellfish or other marine animals and plants--are classified in Industry 11251, Aquaculture; and ? Gathering and processing seafood into canned seafood products--are classified in Industry 31171, Seafood Product Preparation and Packaging.