WUHAN, May 9 (Xinhua) -- Aquatic biodiversity in the Yangtze River basin in China has been recovering following the launch of a 10-year fishing ban several years ago.

While mammals commonly evolve from land to water, such as whales, dolphins, dugongs, seals, walruses, otters and beavers, it is "extremely rare" for the process to reverse, said the study's lead ...