We are delighted to announce that we will start an online series of open seminars and discussions starting in June 2021 to address the grand challenge of predicting harmful algal blooms. This monthly series will be delivered by six experts and the topics will cover size-based models, acclimation models, model validation, and machine learning etc. The detailed schedule is listed below. Register now ! For more information, please check: files/GlobalHAB-online-webinars_Announcement_.pdf