Tidal bores occur in relatively few locations worldwide.
The bay must also have large tidal range - typically more than 6 meters between high and low water.
Other tidal bores, like thePororoca, in the Amazon river in Brazil, occur during spring tides.
Indeed, the regular occurrence of the Silver Dragon have produced the oldest known tide table in 1056 AD.
ThePororocais another significant tidal bore that occurs in the Amazon river.
Its name comes from the indigenous Tupi language, where it translates into “great roar”.
In China, along the Qiantang River banks a number of tragic accidents happen each year.
Tidal bores often affect shipping and navigation in the estuarine zone, and can be devastating for wildlife.
At times the waves reached a height of 20 feet.Photo credit
Sources:Wikipedia,NatGeo,AtlasObscura
