 Many of the plot elements are taken from the Ian Fleming (I) (qv)  novel "Live and Let Die" (which were not used in the movie of that  title). Some of these elements are the partial dismemberment of  Felix Leiter by sharks, the sign put on his nearly dead body which  reads "He disagreed with something that ate him", and the smuggling  of illegal merchandise (drugs in the movie, pirates booty in the  novel) using the cover of exotic fish.