Take the canyon under the sea off Nazaré in Portugal. This immense gash is ... ledge nearer the shore lifts it, creating a monster wave. It is perhaps the biggest wave in the world, the widest ...

Garrett McNamara holds the record for the largest wave ever surfed, set in 2011 in Nazare, Portugal. Last year he claimed to have surfed a 100-footer also at Nazare, but the height hasn’t been ...