Dr Gavin Tilstone says the effects on wetter winters and warmer summers are having an impact [BBC] Record winter rainfall is flushing pollution and sediment into Devon and Cornwall's coastal waters, raising risks to marine life, shellfish and potentially human health as conditions warm. In March, forecasters said parts of Cornwall and Devon had seen rainfall totals reach about 150% of the long-term average and, in February, the Met Office recorded Cornwall's wettest winter since records began.