What causes dolphins to display stampeding behavior is unknown, and the burst of activity appears to happen spontaneously.

Though Miharu is a porpoise, the internet affectionately dubbed it the "Smiling Dolphin," boosting its popularity while drawing attention to the endangered Yangtze Finless Porpoise species.

Dolphins are important indicators for the health of the rivers they live in, which are also the lifeblood of huge economies and hundreds of millions of people. WE DEPEND ON RIVER DOLPHINS Where ...