Your first ancestor

Invisible to the naked eye... and yet, this tiny organism is your closest cousin!

Choanoflagellates are marine microorganisms that often live alone... but sometimes in colonies. These simple groupings may well have inspired the birth of the first multicellular beings.

Thibaut Brunet, a researcher at the Institut Pasteur, explains how studying these organisms helps us understand our origins and the evolution of life.

From the microscopic to the human, everything is connected.

(video in french, english subtitles available translated by AI)