Industry adds its own poisons. Factories cluster round the coastline, and even the most modern rarely has proper waste-treatment plant. They do as much damage to the sea as sewage.

• 工业也加重了毒性。海岸边林立的工厂、甚至是最为现代的工厂也极少有适当的废水处理系统。这些和污水一样都给大海带来了破坏。