HAB (harmful algal bloom/red tide) is a public health concern. Here, we are interested in the interaction of algae & viruses which can play a role in a bloom crash. We will utilize a low-cost flow camera (PlanktoScope) to identify the dominant species & a low-cost foldable microscope (FoldScope) for outreach. We envision that the synergy of fundamental science and outreach components will enhance community participation and build capacity to monitor HABs.