Scientists at The University of Texas at El Paso and Stanford University were recently surprised to find that the natural community of zooplankton—tiny, aquatic animals known to graze on bacteria—present in freshwater and saltwater do not clean water that is contaminated with fecal microorganisms. Scientists at The University of Texas at El Paso and Stanford University were recently surprised to find that the natural community of zooplankton—tiny, aquatic animals known to graze on bacteria—present in freshwater and saltwater do not clean water that is contaminated with fecal microorganisms. Plants & Animals Cell & Microbiology Phys.org – latest science and technology news stories