Study reveals mislabelled seafood products include meat from critically endangered species, raising conservation and consumer concerns.
Shark steaks? DNA tests show many sold in U.S. stores come from endangered species like hammerheads and makos—posing risks for both sharks and consumers.
A new study has found meat from critically endangered sharks being sold in US grocery stores under misleading labels. Researchers warn that the trade not only threatens vulnerable shark populations but also exposes consumers to potential health risks, including high levels of mercury.
Scientists from Stony Brook University and partners used DNA barcoding to analyse shark meat sold at supermarkets and fish markets across the United States. Of the samples tested, a significant proportion were identified as belonging to species listed as endangered or critically endangered by the International Union for Conservation of Nature (IUCN). These included hammerheads, shortfin makos, and other highly threatened species.
Misleading labelling
Products were often sold under generic names such as “shark steaks” or “rock salmon,” leaving consumers unaware of the species or its conservation status. In some cases, labelling failed to meet US Food and Drug Administration guidance, which requires accurate naming of seafood products.
Shark populations worldwide are in steep decline due to overfishing, bycatch, and demand for meat and fins. Researchers emphasise that selling meat from endangered species undermines conservation efforts. Health experts also caution that shark meat often contains high concentrations of mercury and other toxins, making it unsafe for frequent consumption.
Raising awareness
The authors call for stricter seafood labelling regulations and stronger enforcement to prevent endangered shark meat from entering US supply chains. They also stress the importance of raising consumer awareness, so that shoppers can make informed choices that do not contribute to biodiversity loss.
