Fangen von Ruderfußkrebsen durch Polypen und Medusen: Nachführen der Tentakel nach Beuteberührung; Nesseln, Führen zur Mundöffnung, Einziehen durch den Mund und Verschlingen der Beute; langsames Entspannen des Tieres.

The film shows all the coordinated movements and kinds of movement which are set in motion when the Cladonema radiatum captures its prey: adding the tentacles after the prey has been touched, nettling the prey, drawing the prey towards the oral aperture, pulling the prey in through its mouth, swallowing the prey, the animal slowly relaxing.