Surfers attempt to ride the Severn Bore as it passes in Newnham on Severn on February 2, 2018 in Gloucestershire, England. The bore, which follows this week's super moon and was given a four-star rating as it is likely to be one of the largest in 2018, attracts surfers from around the world to ride it. The Severn bore, a natural tidal phenomenon and one of the largest in the world, pushes a 4ft wave up the Severn Estuary and is at its most dramatic in the spring when the tides are at their highest. (Photo by Matt Cardy/Getty Images)
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