This webpage hosts a 53-minute lecture titled "Indispensable Plankton," presented by Sakina-Dorothée Ayata, a marine ecology professor at Sorbonne University. The conference explores the critical role of plankton in aquatic ecosystems, highlighting its contribution to water purification, climate regulation, and global economies despite comprising over 98% of aquatic biomass. Ayata discusses the diverse nature of plankton and the significant threats it faces from climate change and biodiversity loss, drawing on her recent research published in BioScience. Organized as part of Canada Ocean Week with support from Quebec and French cultural institutions, the event aims to raise awareness about the immeasurable value of plankton to humanity.