Scientists use Burmese pythons as ‘living sensors’ to reveal hidden wetland pollution

Florida’s Burmese pythons are notorious for swallowing native wildlife, but scientists are finding another use for these invasive snakes. Their bodies can function as biological sensors, carrying chemical traces that reveal what is happening inside the wetlands they inhabit. Researchers are examining python tissues for pollutants including mercury and a class of persistent chemicals known as PFAS, using the snakes to understand contamination across the Greater Everglades ecosystem. A 2026 study led by University of Florida researchers found PFAS in the livers of 67 Burmese pythons, while earlier research has documented mercury accumulation in the species. Because the snakes are already being captured as part of invasive-species removal programmes, scientists can collect samples without deliberately taking additional animals from vulnerable native populations.Why Burmese pythons can act as biological sensorsThe idea rests on the way Burmese pythons live and feed.