River Dolphins and Larger Toothed Whales Ridgway and Harrison's Handbook of Marine Mammals, Volume 3

Dr. Thomas Jefferson's main interests are the development of marine mammal identification aids, and the systematics and population ecology of the more poorly known species of dolphins and porpoises. His work since receiving his PhD in 1983 has been related to conservation and management of marine mammals threatened by human activities. His current primary research focuses on the conservation biology of Indo-Pacific humpback dolphin (Sousa chinensis) and finless porpoise (Neophocaena phocaenoides) populations in Hong Kong and surrounding waters. I am also working on other projects looking at the systematics and ecology of these species throughout their ranges. In addition, I am involved in many other projects, including those on the conservation of the critically endangered vaquita (Phocoena sinus) and on the taxonomy and population ecology of common dolphins (Delphinus spp.)San Diego, California, USA