Micah Rogers spends a lot of time looking through a microscope at the tiny world of phytoplankton, those microscopic, plant-like critters that make up the base of the marine food web. The reason she does this is to make sure none of those microorganisms is in such prevalence that it indicates a harmful algal bloom or HAB. When HAB's occur, they can raise toxicity levels in clams and crabs to the point of concern for public safety.