Dr. Sean Todd College of the Atlantic Perfluorinated alkyl substances (PFAS) and phthalates are persistent organic pollutants, toxic chemicals that are mostly resistant to degradation and can accumulate over periods of time in an environment. The effects of these toxins are unknown for marine mammals, but have been linked to developmental problems and immunosuppression in … Continue reading DV-19-05 Perfluorinated alkyl substances (PFAS) and phthalates in marine mammals found in the Gulf of Maine adjacent Canadian waters: relevance to human health