THE critically endangered Irrawaddy dolphin (Orcaella brevirostris) has been sighted again in San Miguel Bay, following a comprehensive marine mammal survey conducted by the University of the Philippines Institute of Environmental Science and Meteorology (UP IESM), in partnership with the Department of Agriculture–Bureau of Fisheries and Aquatic Resources Regional Office 5 (DA–BFAR 5) from July 26 to Aug.