Long-term monitoring on Canada’s Baffin Island reveals that polychlorinated biphenyls (PCBs) in local beluga whales now exceed international safety standards by threefold. As sea ice melts, the opening of Arctic shipping routes has spurred increased maritime traffic and oil-gas exploration. Pollutants accumulate through the food chain, while noise disturbs the whales’ echolocation systems, causing their habitat to deteriorate continuously.
Leave a Reply