Luc Besson is known to be a little bit of a pervert. But I'm about to argue that, in addition to liking young women, he also has a sort of a fetish. And while with directors like Quentin Tarantino the fetish is something rather understandable ( Quentin likes feet ). Luc Besson seems to be turned on by... well... fish. And specifically by Dolphins. His 1988 film Le Grand Bleu is a love triangle between a young woman, an amphibian man, and a Dolphin ( which the film presents to be a mermaid ).