Then the fish is cleaned, sorted and, eventually, canned. Longliners drop one 30- or 40-mile-long line into the water, then wait for the fish to catch on hundreds (or thousands) of hooks. Purse seiners drop a large, round wall of netting around a school of fish and then “purse” the bottom of the net shut to prevent fish from escaping. Larger fishing operations tend to rely on the other two methods. Pole-and-line fishing is the kind hobbyists take part in: sitting on a boat and bringing in one catch at a time. There are three methods these fisheries use to catch tuna: purse seining, longlining and pole-and-line fishing. Their job is to enforce regulations and “make sure the predators of ocean ecosystems remain in the ocean and not on our plates,” according to Barbara Block, a professor of marine sciences at Stanford University who co-directs Stanford’s Tuna Research and Conservation Center. There are five organizations that manage regional fisheries within those economic zones.
in the world, containing 3.4 million square nautical miles of ocean.) (E.E.Z.s are areas that extend roughly 200 nautical miles from each country’s coast the U.S., with over 13,000 miles of coastline, controls the largest E.E.Z. albacares.īefore it lands on a Subway sandwich, that tuna, like the majority of commercially sold tuna, is caught by fishermen working in exclusive economic zones. Subway’s tuna and seafood sourcing statement says the chain only sells skipjack and yellowfin tuna - species that a lab would recognize as Katsuwonus pelamis and T. Food and Drug Administration, there are 15 species of nomadic saltwater fish that can be labeled “tuna.” From the Sea to Your SubmarineĪccording to the Seafood List, which is compiled by the U.S.
“Subway’s tuna sandwich ranks among our guests’ favorite sandwiches,” the chain’s spokeswoman wrote in an email.įor about $500, his lab could conduct a PCR test - which rapidly makes millions or billions of copies of a specific DNA sample - and try to tell me whether this substance included one of five different tuna species. Still, Subway’s storefronts are ubiquitous, and according to the company, its tuna sandwiches are some of the best selling. (As Grub Street once calculated, the average distance between Subways in Manhattan is 1,154 feet, or about four and a half blocks.) The total number of locations has been in decline since 2015, a trend that a New York Times investigation attributed, in part, to targeted and manipulated inspections.
Subway has nearly 40,000 locations worldwide, about half of them in the U.S. That year, the global canned tuna market was valued at $8.57 billion, according to Grand View Research. Then, in 2020, canned goods took on great urgency as shoppers scrambled to buy shelf-stable food, not knowing how long the pandemic might last. After a decades-long decline in tuna consumption, a 2018 Wall Street Journal story suggested that millennials were to blame (“many can’t be bothered to open and drain the cans”), though newer brands offering more sustainable options were seeing their market share grow.
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