‘Mega-Industrial’ Trawlers Threaten Europe’s Ocean Health

Europe’s floating factories make up just one percent of the fleet but catch more than half the fish—and they cause the majority of environmental damage.

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The Helen Mary, measuring 380 feet, hauls in catch. Credit: BLOOM/Pierre Gleizes
The Helen Mary, measuring 380 feet, hauls in catch. Credit: BLOOM/Pierre Gleizes

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For Europe’s fishing industry, it turns out size does matter.

Of 60,000 European-flagged fishing boats, just 638 are responsible for most of the harm, according to a new report by French non-profit BLOOM. The largest in the fleet, at 108 feet or longer, pose the greatest threat to food security, cost taxpayers the most and cause unparalleled environmental harms. 

As the European Union decides how to spend its almost $8 billion fisheries budget for 2028-2034, environmentalists are calling for the dismantling of these “mega-industrial” ships.

“They’re one percent of the fleet, and they threaten 99 percent of fishers,” said Claire Nouvian, founder and director of BLOOM. “They’re a zombie industry in the sense they’re actually creating death, creating misery, creating pillage and creating injustice.” 

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These floating factories, capable of catching and processing hundreds of tons of fish each trip, account for 55 percent of the fish caught by European vessels. And they do so with disproportionately more ecologically impactful gear. 

Indeed, 84 percent of these vessels used “towed” gear, such as bottom trawling nets or demersal seines that ensnare marine life indiscriminately, resulting in high volumes of unwanted bycatch.

“Bottom trawlers are linked to seabed abrasion, destruction of bottom habitats and the disruption of the food web,” said Léna Fréjaville, BLOOM’s head of fisheries and the report’s lead author. “There is a link between the size, the extraction capacity and the gear used,” added Fréjaville, highlighting that below 108 feet only about 17 percent of boats use this type of gear, with the vast majority of smaller vessels instead using lower-impact, passive equipment. 

“Trawling has wiped out habitats for animals to feed and sleep and reproduce, and now you’ve got gravel and rubble at the bottom of the ocean,” said Nouvian, who has termed the activities of these mega-ships as “counter-fishing” because of their longer-term ecological damage. 

The ships also operate outside E.U. waters, harvesting marine life, on average, 2,600 miles from their home port. With European coasts unable to sate their voracious appetite, the E.U. pays over $100 million annually for fishing rights in other nations’ coastal waters.

Often, they’re no longer fishing to feed humans: “They’re catching anything that moves to transform into money and feed,” said Nouvian, pointing to the ever-growing fishmeal and fish oil industry that depends on “absolutely pillaging [African] waters.”

The Dutch vessel Zeeland, measuring 370 feet, fishing alongside a 35 foot vessel. Credit: BLOOM
The Dutch vessel Zeeland, measuring 370 feet, fishes alongside a 35-foot vessel. Credit: BLOOM

Industry players have historically pushed back on these claims. The Pelagic Freezer Trawler Association—which represents eight fishing companies and at least 18 vessels ranging from 180 to 470 feet—maintains the larger vessel size is environmentally advantageous.

“The size of our freezer trawlers makes them enormously efficient and therefore sustainable for fishing. Big is therefore not always bad,” the association argues on their website. “Not the size of the vessel, but scientifically derived quotas determine how much freezer trawlers can fish,” the association added, noting that 70 percent of a ship’s capacity is usually reserved for sorting, processing and storage.

These sizable steel ships however, are also accused of squeezing small-scale fishing. 

In France, artisanal fishing generates ten times more jobs than mega-trawlers when you compare them pound for pound of fish caught. Yet, over the last two decades, 80 percent of European fisheries funding has gone to industrial fleets while small-scale coastal fishers have received just one percent of the budget.

“You see the despair in ports,” said Nouvian. “Small-scale fishers are desperate. They’re really hopeless and want these boats out of their waters.”

There are now calls for the European Parliament to spend $3 billion to dismantle these boats by 2035 and refit them for other purposes, such as goods transportation. With just 2.7 percent of fisheries subsidies allocated to ocean protection since 1994, BLOOM is calling for an equal split of the remaining budget between conservation and small-scale fisheries. 

Establishing a “maximum tolerable length” of 108 feet would alleviate the pressure currently placed on stocks and allow for a more equitable redistribution of quotas to coastal fishers, according to Nouvian: “Transitioning away from mega-industrial counter-fisheries towards small-scale can revitalize the ocean’s health, repopulate the ocean and increase the fish catch in the long run.”

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