It wasn’t long ago that aquaculture—fish farming—was widely viewed as a benign activity that promised to feed people while freeing wild
fish stocks from the stresses caused by commercial fishing. Analogies were drawn between the evolution of
hunter/gatherer societies into more advanced agricultural communities, as many predicted that the
eventual prohibitions of market hunting and the commercialization of most
freshwater fish species would logically and inevitably lead to prohibitions on commercial
fishing for marine fish species, too.
But somewhere along the way, harsh realities intervened, and—at
least to some people—fish farming no longer seems to be the panacea that it
once appeared. As
noted in an article released by the Associated Press,
“as [aquaculture] has grown, the problems associated with
large-scale farming have grown with it…The farms and the waste from them can
degrade and pollute nearby ecosystems, diseases can quickly sweep through the
tightly packed fish, and gathering the feed for the animals can cause distant
environmental problems.”
“Approximately 20% of the global catch of wild fish goes
toward making fishmeal, and much of it is directed to feed farmed aquatic animals. This demand has intensified over the years,
creating a troubling feedback loop where the aquaculture industry depletes wild
fish stocks to sustain itself. The
depletion of smaller forage fish is particularly concerning, as these fish play
an essential role in marine ecosystems, supporting larger species, including
wild fish, marine mammals, and seabirds.”
“up to hundreds of thousands of fish crowd each floating
pen. The fish eat and grow at astounding
rates—and defecate. A typical industrial
farm of several hundred thousand fish produces around one million pounds of
waste annually. That’s roughly the same
amount of waste generated by Maine’s largest city, Portland, in a year.
“…[The waste] is not captured or treated. Instead, it floats out through the pens to
pile up on the ocean floor. The waste
accumulates over time to form a layer of foul-smelling black sludge that is
toxic to small bottom-dwelling creatures.
Eventually, the seafloor around an industrial salmon farm will transform
into a lifeless landscape.
“Fish also produce a lot of nitrogen waste. Nitrogen pollution mixed with warm water
creates perfect conditions for toxic algae outbreaks…Nitrogen pollution also
clouds the water, blocking eelgrass nurseries on the seafloor from essential
sunlight.”
The Conservation Law Foundation also noted the threat that
farmed fish can pose to their wild counterparts.
“Contagious diseases quickly spread through the penned
fish. The salmon industry uses antibiotics
to prevent disease, but that increases the risk of antibiotic resistance in humans
who consume the farmed fish.
“…[S]mall crustaceans, known as sea lice, cling to salmon and
eat their skin. In natural conditions,
sea lice parasites attach in small numbers, making them a minor issue that
doesn’t affect a fish’s health. But in
industrial salmon farms, they spread easily between captive fish…To control sea
lice, the salmon industry has historically used chemical treatments and pesticides—including
some that kill crustaceans like lobsters.
“Disease outbreaks and sea lice infestations at industrial
salmon farms also threaten nearby endangered wild salmon and fish species that
are key to fishermen. Viruses and sea
lice larvae travel through the water from captive fish to wild fish. Escaped farmed fish…can also transmit disease
and parasites.”
“Marine aquaculture in the United States operates within one
of the most comprehensive regulatory environments in the world. Farms sited in U.S. waters must meet a suite
of federal, state, and local regulations that safeguard environmental health,
water quality, food safety, and public health.”
Even so, public sentiment seems to be swinging against fish
farms, not only in the United States, but elsewhere in the Americas.
The State of Washington, as well as many of its residents,
including coastal tribes with long traditions of salmon fishing, were outraged
by the escape and Cooke’s alleged negligence, fearing that the escaped Atlantic
salmon might survive and compete with already threatened runs of native Pacific
salmon. As a result, in 2018, Washinton
legislators passed a ban on farming Atlantic salmon in state waters.
“determined that allowing Cooke to continue operations posed
risks of environmental harm to state-owned aquatic lands resulting from lack of
adherence to lease provisions and increased costs to [the Washington Department
of Natural Resources] associated with contract compliance, monitoring, and enforcement.”
That
ban is being challenged by the fish farmers, in the form of a group calling
itself the Northwest Aquaculture Alliance, which claims that the rulemaking
process leading to the ban was invalid, because its outcome was predetermined. It’s never easy to predict what a court might
decide, and it is possible that the Aquaculture Alliance could prevail, but it’s
probably safe to say that in the State of Washington, aquaculture proponents,
like salmon returning to spawn, will have to swim against some very strong currents
if they expect to achieve their goals.
“Consequences of salmon farming include massive salmon
mortalities, intensification of toxic algae blooms (such as red tide),
introduction of exotic species, the loss of local fauna, generation of dead
zones, entanglement of marine mammals and bacterial resistance [to
antibiotics]. According to a Just Economics
report, the salmon industry seeks to grow fivefold over the next 10 years,
threatening the waters of the Beagle Channel.”
Such growth, and the threats to the marine ecosystem that it
would create, was unacceptable to the residents of Tierra del Fuego, who sought
and received the political support to shut down the net pen farms.
Even in Chile, Argentina’s neighbor and one of the world’s
biggest producers of net pen-farmed salmon, people are beginning to question
the practice.
About
one year ago, the New York Times has reported,
“a report from the United Nations called salmon farming ‘one
of the main threats to the environment’ in Patagonia. David R. Boyd, an associate professor at the
University of British Columbia, who prepared the U.N. report, recommended
suspending ‘the expansion of salmon aquaculture pending independent scientific
analysis of adverse environmental impacts’—a call that the industry rejected.”
The Times also reported that
“Arturo Clement, the president of the industry association,
SalmonChile, acknowledged that, in the past, the sector had ‘made mistakes and
we still have much room for improvement…We are convinced that it is possible to
make environmental care compatible with economic development.”
Others are not as certain.
They point to the same issues identified elsewhere—antibiotic use, pollution
from fish waste creating hypoxic “dead zones” and harmful algae blooms—as threatening
Chile’s marine environment. The Times
described Tarsicio Antezana, a retired oceanographer who lives on an island off
the coast of southern Chile, seeing
“heaps of garbage and fish waste abandoned by salmon
companies…when they leave. The trash
sits on shorelines for months, and in some cases, he said that only outrage
from local residents forced the companies to clean up.”
“Leticia Caro, a member of the Indigenous Kawesqar community,
said she has already seen devastating effects of the salmon industry on her
people’s ancestral territory in the Magallanes.
She described seafloor contamination, the loss of native fish species
her community relies on for food and the dumping of industrial waste in
Kawesqar fishing areas.”
Yet, while there are many voices in Chile that oppose
expanding the farms, there are also many who seek the economic benefits that
the farms provide. Thus, while the Chilean
farms are under fire from some quarters, it is not clear whether the government
will take any action to significantly curb their activities.
The global opposition to fish farms has generally focused on salmon
net pens sited in cold-water environments.
Land-based production is generally considered a viable, ecosystem-friendly
alternative to the open water farms.
Thus, the newest challenge to fish farming might be something of a
surprise.
The Foundation’s concerns stem from the fact that AquaCon,
the proposed plant’s operator, plans to build the farm just five miles above
the Susquehanna Flats, an important spawning area for striped bass and other species
such as American shad, hickory shad, alewife, and blueback herring. The Foundation fears that, just as in the
case of net pens, the land-based farm’s discharge water would contain too much
waste matter, could promote algae blooms and resulting hypoxic “dead zones,” and
so cause substantial harm to the flats’ submerged aquatic vegetation as well as
to the many fish that gather on the flats to spawn.
“Land-based salmon farms are relatively new and
unpredictable. Knowing the prior failure
of these types of plants, and that the Susquehanna River is already overloaded
with nutrient pollution, [the] permit must protect against these risks.”
The publication noted that the Chesapeake Bay Foundation is
not seeking to prevent the AquaCon plant from ever operating. Instead,
“CBF will be working to ensure [the] permit is strengthened
to adequately consider the imminent threats to the Susquehanna Flats and nearby
aquatic habitats.”
Open-water fish farms have, in the past, done significant
harm to the waters where they were cited.
As land-based farms are proposed as alternatives, it only makes sense to
ensure that they are properly regulated before they begin operations, so that
both the farm and the surrounding environment can thrive.
Yet not everyone believes that fish farming ought to be thoroughly
regulated.
“in consultation with the Secretary of Health and Human
Services and with input from the United States fishing industry, shall
immediately consider suspending, revising, or rescinding regulations that
overly burden America’s commercial fishing, aquaculture, and fish processing
industries…”
and
“in consultation with the Secretary of Agriculture, shall
develop and implement an America First Seafood Strategy to promote production,
marketing, sale, and export of United States fishery and aquaculture products
and strengthen domestic processing capacity…”
The lawsuit, brought by the Center for Food Safety and a
group of environmental organizations, argued that the Corps’ permit failed to
properly address fish farms’ environmental threats. The federal district judge, Kymberly K.
Evanston, issued an initial ruling last fall which criticized the Corps for not
acknowledging the harm that fish farms cause the environment. Her March ruling vacated the permit
altogether.
The court’s decision points out the difficulties that the
administration faces in its efforts to promote fish farming. Earlier court decisions, in 2018 and 2020,
also ruled against offshore aquaculture in the Gulf of Mexico. In another instance, the federal government
provided some funding for a pilot fish farming project that would have been
located about 45 miles off Florida’s Gulf Coast. However, public opinion was so strongly set
against the project—regulators received almost 45,000 comments opposing it—that
it was eventually cancelled.
“a permitting system that is too lengthy, too costly, and too
subject to legal challenges from groups opposed to commercial aquaculture.”
Given the recent court decision, he believes that companies
may now be required to seek permits on an individual project-by-project basis,
instead of relying on permits that cover a broad expanse of federal
waters. Such an approach is likely to add
time and effort to the permitting process.
“Florida is not Maine.
California is not Texas. And in
just the Gulf of Mexico, there are significantly different habitats [and] different
fish species that could be affected…
“Claiming one size fits all doesn’t seem realistic, and the
court agreed. Now they can’t use one big
permit to speed these things through.”
Despite the recent setbacks, fish farming is not a dead
issue in the United States. There are
many in the industry who want to see it not only continue, but also expand.
But the rapid growth of aquaculture promoted in Trump’s
executive order is unlikely to occur.
Even if regulations governing aquaculture are relaxed—and, in fact, aquaculture
isn’t actually regulated by NMFS or by any other federal agency, although some,
like the Army Corps of Engineers, might have regulatory authority over some
aspects of aquaculture operations—public opposition to such a private
appropriation and likely degradation of the nation’s public waterways ensures that any
proposed fish farms receive thorough review, to make sure that such projects meet
all biological and legal standards.
Given the past problems that fish farms have caused, both in
the United States and elsewhere, the public is right to insist that no more be
built until all of the public’s concerns are addressed.