A report on the basic research study to identify zooplankton and benthic species present in hot springs, as well as to determine the influence of physico-chemical properties of hot spring water on the species. 23 zooplankton and 9 macrobenthos were identified in Cuyab Hot Spring and 17 zooplankton in Laguna Hot Spring. Prof. Ma. Vivian C. Camacho CAS-Institute of Biological Sciences College of Arts and Sciences University of the Philippines Los Baños www.uplb.edu.ph