UW Puget Sound Study Shows Warming Oceans Have Decimated Marine Parasites; ‘Could Mean Bad Stuff For Us’

More than a century of preserved fish specimens offer a rare glimpse into long-term trends in parasite populations. New research from the University of Washington shows that fish parasites plummeted from 1880 to 2019, a 140-year stretch when Puget Sound — their habitat and the second-largest estuary in the mainland U.S. — warmed significantly.