Cleaner oceans ahoy!

All that nasty man-made pollution that that can get into fish-flesh? It’s steadily reducing over time. A new survey article “Evaluation of the global impacts of mitigation on persistent, bioaccumulative and toxic pollutants in marine fish” finds a 15–30% reduction per decade, globally…

“Although persistent, bioaccumulative and toxic pollutants (PBTs) are well-studied individually, their distribution and variability on a global scale are largely unknown, particularly in marine fish. Using 2,662 measurements collected from peer-reviewed literature spanning 1969–2012, we examined variability of five classes of PBTs […] All PBTs showed significant declines in concentration levels through time, ranging from 15–30% reduction per decade across PBT groups.”