They presented a total of 4 lectures on the impact of the volcanic eruption in Tonga in January 2022 (article in press), the very good relationship between turbidity modelling results and Sentinel 2 images south of Fiji, a summary of water colour algorithms for detecting Trichodesmium or lagoon chlorophyll, and finally a presentation of the RERIPA project showing the value of remote sensing for monitoring coastal areas in the Pacific Islands.