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A Fish That Saves Energy ZdS#14

Series : Zeste de science

  • Description
  00:04:37  2018  HD 16/9  Color  Sound

The Youtube channel Zeste de science explores all aspects of scientific research, proving that even the most complicated scientific facts can be explained in less than 5 minutes, and that even the most seemingly trivial events of everyday life, if thoroughly studied, can contribute to the biggest technological advances.
Episode 14: Researchers in Paris are studying the collective behaviour of red-nose tetras, also known as Hemigrammus bleheri. They discovered that adopting the usual "diamond-like" formation when the fish swim in schools is not always the most energy-efficient solution. Red-nose tetras always swim against the tide, that is why a stronger tide requires extra effort. In such a case, they opt for a "phalanx-like" formation, swimming side by side. This pattern enables them to save energy and could later lead scientists to design little bio-inspired swimming robots.

Producer : CNRS Images
Author : BELLO Léa (DIRCOM, CNRS, Paris )
Chief editor : BAKER Nicolas (CNRS Images, UPS CNRS, Meudon)
Director : GOMBERT Christophe (CNRS Images, UPS CNRS, Meudon)
Audiovisual processReal shots. Use of archive images and animations.
Interviews (live sound).
NotesScientific sources :
Ramiro Godoy Diana et Benjamin Thiria (PMMH, CNRS, ESPCI Paris, Univ. Paris Diderot, Univ. Sorbonne Université)
PMMH : Physique et mécanique des milieux hétérogènes (INSIS)
ESPCI : École supérieure de physique et de chimie industrielles de la ville de Paris


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Technical Sheet
Item No.6503
PublicLarge audience
Original SupportHD