"Fishing Down," or the catching of second-level creatures normally preyed upon by larger fish, is the fishing industry's response to the depletion of prized species such as tuna, cod, and swordfish.
(Fishing Down," or the catching of second-level creatures; is; the fishing industry's response to the depletion of prized species such as tuna, cod, and swordfish)
Fishing Down," or the catching of second-level creatures
is
the fishing industry's response to the depletion of prized species such as tuna, cod, and swordfish