If you want that type of scenario, then implement anti dynamite fishing. And also talk about ecological conflicts of countries. Call a peace talk, and discuss your ecological problems. Talk about the territory of fishing - conflicts always start with a shortage of territory. If you successfully conduct this, it will lessen the chances of conflict between countries.
Without knowing the context of this question I would say a lot of horror films come from real life experiences exaggerated and from dreams of the writer.
Explanation: Read about horror writers and their influences.
