pietz_with_kaiya.jpg

University of Arizona historian David Pietz  with professor Zhou Kaiya, a pioneering baiji dolphin researcher, on Yangtze River in November 2019, searching for finless porpoises. (left) University of Arizona historian David Pietz with professor Zhou Kaiya, a pioneering baiji dolphin researcher, on Yangtze River in November 2019, searching for finless porpoises.