Record Mercury Deaths Plague UK Porpoises

Marine mammals in British waters are facing a critical threat as mercury poisoning claims porpoises at a record rate. These animals, positioned at the top of the marine food chain, accumulate high levels of toxic mercury from their prey. This accumulation is directly linked to a heightened susceptibility to infections and a greater risk of death.

Recent studies by the Zoological Society of London reveal that mercury levels in porpoises have doubled compared to 35 years ago. This dramatic increase correlates with a threefold rise in oceanic mercury levels since the Industrial Revolution, primarily from man-made sources like fossil fuel burning and industrial production. The mercury persists in the environment and bioaccumulates up the food chain.

Researchers caution that the escalating contamination in top predators like porpoises has significant implications for human consumption. Similar accumulation processes may affect the fish and shellfish populations, posing a potential health risk to people who consume them. The findings highlight an ongoing environmental challenge with far-reaching consequences for both marine ecosystems and human well-being.