River Dolphins and Larger Toothed Whales

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 1995 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. He is also working on other projects looking at the systematics and ecology of these species throughout their ranges. In addition, he is 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.). He has published over 200 books and papers on these animals. San Diego, California, USA

• 1. Amazon River dolphin (Inia geoffrensis)2. Franciscana (Pontoporia blainvillei)3. Susu (Platanista gangetica) and Bhulan (Platanista minor)4. Irrawaddy dolphin (Orcaella brevirostris) and Australian snubfin dolphin (Orcaella heinsohni)5. Beluga whale (Delphinapterus leucas)6. Narwhal (Monodon monoceros)7. Sperm whale (Physeter macrocephalus)8. Pygmy sperm whale (Kogia breviceps) and dwarf sperm whale (Kogia simus)9. Baird's beaked whale, Sato’s beaked whale, and Arnoux's beaked whale (Berardius spp.)10. Cuvier's beaked whale (Ziphius cavirostris)11. Shepherd's beaked whale (Tasmacetus shepherdi)12. Bottlenose whales (Hyperoodon ampullatus and Hyperoodon planifrons)13. Longman’s beaked whale (Indopacetus pacificus)14. Beaked whales of the genus (Mesoplodon spp.)

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