This film is about three animals: Hyas, Macropodia and great fan worms – two crustaceans and one worm. They all present surprising, spectacular plumage. 　　Jean Painlevé’s surrealist study of spider crabs delights in their dramatic tussles and gracefully camouflaged seaweed costumes. Both the theatrics of Chopin’s music and the sprightly, informative voice-over heighten the magical underwater spectacle of these creatures of the ocean.