The study ... https://www.sciencedirect.com/science/a ... 0X19309859
Story by the Guardian ... https://www.theguardian.com/environment ... rrier-reef
Quote: "Scientists found levels of the chemicals in the tissues of snubfin dolphins and humpback dolphins had tripled and, in some cases, risen even higher between 2010 and 2015. One tissue sample taken from a female humpback dolphin had concentrations of polychlorinated biphenyls (PCBs) – banned in Australia since 1975 – that were among the highest recorded in the scientific literature ... 68% of the dolphins sampled had levels of the chemicals high enough to impact their health and long-term survival."
Flashback to a 2018 story about extreme PCB levels in killer whales ... https://www.theguardian.com/environment ... -pollution
Also this ... https://animals.howstuffworks.com/mamma ... whales.htm