For thousands of years, the world's oceans had been a human dumping ground - from humble sewage to high-tech nuclear waste.
Then, in the seventies, the fledgling environmental organisation, Greenpeace, began a successful campaign to change practices that they said were merely short-sighted measures rather than long-term solutions. But have the campaigns really helped to protect the deep oceans? Or are scientific arguments correct in claiming that the alternatives are, in fact, worse options?