Episode 19 We often see people fishing in the smallest and dirtiest of ditches and wonder what can possibly survive in such an environment. Then we see people selling fish beside the road and wonder if they have been caught in these ditches. Even the Caspian is fairly well polluted these days according to the guide book, but you don't need the guide book to see just how much rubbish must get washed down into it, then there are all those oil rigs off shore, hundr...