Ah, Brazil. When you think about the country, you imagine hot bodies on the Copacabana, picturesque views of Christ the Redeemer and partying it up at carnival time. You do not think about launching yourself into a swirling mass of water surging up one of the Amazon jungle’s rivers, dodging floating debris, whilst on the lookout out for piranhas, caimans and stingrays. (Apparently, the urban legend of the spiny Candiru, a small catfish that can swim up the urethra and lodge itself permanently, has been largely debunked.) Despite the aforementioned fear factors, there are a few adventurous souls who relish a distinctly out of the norm activity when they visit Brazil – surfing the pororoca.