Better than anyone else, divers know the dangers that human civilization holds for marine life. Pollution destroys sea life as well as human life; and oil tankers, particularly, on their runs across the coral areas of the Red Sea and the Indian Ocean, represent a serious threat to marine fauna. It is possible – indeed, it is likely – that, unless there is a great change in the near future, disaster will follow. And it will be a disaster of which man himself will be not only the perpetrator, but also one of the victims.
(And yes, this is the same man who, in the Oscar-winning The Silent World (1956), blew up a coral reef with dynamite, rode a tortoise, killed a baby sperm whale and slaughtered a frenzy of sharks feeding on it; later he became a dedicated conservationist.)