Marine Mammal Pollution and Welfare

Persistent chemical pollutants accumulate in marine mammal blubber, causing immune suppression, reproductive failure, and developmental problems.

Key Facts

PCBs, DDT derivatives, and PFAS accumulate in marine mammal blubber at concentrations up to millions of times ambient seawater levels
UK bottlenose dolphins and orcas have PCB concentrations among the highest recorded globally
Immune suppression from PCB exposure increases susceptibility to infections including morbillivirus
Stranded marine mammals provide welfare data through post-mortem pollution burden assessment
European orca populations face extinction risk partly from PCB-related reproductive failure

Welfare Considerations

Chemical pollution in marine mammals represents a form of slow, invisible welfare harm that has accumulated over decades of industrial chemical use. The immune suppression and reproductive failure caused by PCB accumulation translate into increased disease susceptibility, failed pregnancies, and premature death. Addressing the source of these chemicals - industrial production and waste disposal - is the only long-term solution.

What You Can Do

Support campaigns for stricter chemical regulation and phase-out of persistent pollutants
Choose personal care and industrial products from companies committed to chemical transparency
Donate to organizations researching pollution impacts on marine mammal health and welfare
Advocate for stronger regulation of persistent organic pollutant disposal and use