The second edition of the Gulf of Guinea Ocean Sciences Summer School (GGOSSS) will take place from 3 to 9 October 2026 in Cotonou, Benin, hosted by the International Chair in Mathematical Physics and Applications (ICMPA–UNESCO Chair) at the Université d'Abomey-Calavi. Forty-five trainees and fifteen instructors from across Africa, Europe and North America will spend seven days on instrumentation, satellite remote sensing, numerical modelling and Python-based data analysis, i