Pororoca - Amazonian Tidal Bore Surfing

Brazilian surfer Savio Carneiro uses binoculars to watch the approaching tidal bore wave, known as pororoca, in the Mearim River in Brazil's amazonian state of Maranhao. The Mearim pororoca is one of many Amazonian tidal bores which surfers have begun to take on in a quest for adventure and to help local economies in one of the poorest regions of Brazil.(Photo/Douglas Engle)(AustralFoto/Douglas Engle)

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