British surfer Andrew Cotton hopes to ride the biggest wave in history, ideally in previously untouched waters.
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That quest has taken him to Portugal, where he surfed one of the biggest waves in history of 60 feet in 2014.
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But the Englishman has his heart set on the record held by his surf buddy Garrett McNamara. The American's official best is a 78-footer in 2011; he claimed to have managed 100 feet in January 2013, but this has not been ratified by Guinness World Records.
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Cotton, here venturing into the water in Portugal, says big-wave surfing can sometimes take days of preparation for just five or six seconds on a wave.
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Cotton likens riding a big wave -- and knowing you will be engulfed by the water -- to meditation. Here he catches a wave in Killybegs, Ireland.
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A trained plumber, he has been able to put his previous trade on hold for the past two years to surf professionally.
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Jet skis are often essential when trying to catch big waves, and Cotton took McNamara onto his 2013 effort.
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He admits there are dangers to big wave surfing and says he feels fear every time it comes to tackle the monstrous swells -- such as this one at Praia do Norte in Nazaré, Portugal.
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The world's leading big-wave surfers flock to Nazare for the European winter season.
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Cotton spends months of the year away from his wife Katy and their two children to pursue his profession.
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But he relishes returning home and surfing his home waters in Croyde on the north Devon coast in England.