After completing a dual bachelor’s degree in Biology and Mathematics at Sorbonne Université (Roscoff, France), Guillaume went on to earn a master’s degree in Marine Biology (IMBRSea). Driven by a strong interest in marine science and conservation, he gradually developed experience in quantitative ecology and the use of numerical tools, alongside training as a scientific diver (CAH1B). His current role in biogeochemical oceanography is the opportunity for him to study the measurement of oceanic parameters and to contribute to improving the accuracy and precision of these data.