"Seafood is a main source of human exposure to environmental pollutants, such as methyl mercury and lipophilic contaminants, including polychlorinated biphenyls (PCBs). In addition perfluorinated compounds (PFCs) biomagnify in ocean food chains, with the highest concentrations in marine mammals at high trophic levels. The investigators recently discovered that PFCs may adversely impact on human immune system development. Thus, in Faroese children, elevated PFC exposures were associated with reduced humoral immune response to routine childhood immunizations. The investigators now propose to extend this observation by utilizing existing and unique birth cohorts of Faroese and Greenlanders with high levels of seafood intake and traditional consumption of marine mammals high in ocean food chains"
Now imagine you're coral. Imagine how much more your immune system is suppressed bathing in these pollutants 24x7. With suppressed immune systems coral falls victim to pathogens it would normally be able to defend against.