Within the framework of Action 1.1 "Database related to climate change for: a) Atmosphere, b) Sea, c) Paleoclimate, d) Inland waters" of Climpact II, the Photo-Catalytic Processes and Environmental Chemistry group of the Institute of Nanoscience and Nanotechnology at NCSR "Demokritos" focused on studying the history of harmful algal blooms (HABs) in the Greek seas and their correlation with the climate change. One of the impacts of climate change is the more frequent occurrence of harmful algal blooms (HABs) in the marine environment, a phenomenon related...