A pair of finless porpoises swim in the clear green Yangtze River in Yichang, Central China's Hubei province.

In 2024, numbers of harbour porpoises fell 10% in the rich feeding waters off Ynys Enlli (Bardsey Island). Experts are at a loss to explain the sudden decrease. Like other marine mammals ...

Conservation efforts focus ... This freshwater porpoise is critically endangered, with an estimated population of around 1,000. Habitat degradation, pollution, and boat traffic in the Yangtze River ...