Die Schlanklibelle Argia legt Eier im Tandem in Unterwasserpflanzen ab. Die Tandems sind stets gesellig. Einzelne Männchen versuchen, auffliegende Tandems zu trennen. Zeitdehnung.

Individual tandems depositing eggs are shown in a number of shots as well as mass depositing by hundred of animals, during which solitary males attack flying tandems. Many of the shots have been slowed down by a factor of 10 or 20.