Jamie Sterling, Mikala Jones, Robert Wingnut Weaver, and Mary Osborne have successfully surfed the Qiantang tidal bore in China.
The group of surfers got the permission of the Chinese government to ride down the river from Hangzhou Bay, almost 30 miles past the city of Hangzhou.
This bore is known as the "Silver Dragon" and only happens twice a year.
The Chinese consider it very dangerous, but it was fun and safe for this crew of Western surfers.
Mary Osborne is the first woman ever to have surfed the Qiantang tidal bore, and Wingnut is the first headstand surfer of the "Silver Dragon."
Watch how they rode the wave. Discover the river waves and tidal bores of the world.