the ships to find out for themselves what was really happening on board. please we make contact with an observer. he's nervous about talking to us because he's signed a non-disclosure agreement but he says he would think about it first he was going to work out at sea for two months. to go in spain is europe's largest fishing port. this ship has just returned from a fishing voyage in the north atlantic. the cargo coming out of the hold looks a lot like shark the owners don't want us to film the cargo they send over the harbor police who stop us filming even though we show them we have a permit we're only allowed to turn the cameras on again inside the option.