US surfer Garrett McNamara, left, makes a take off on a wave at Praia do Norte beach in Nazare, Portugal, Tuesday, Jan. 29. McNamara is said to have broken his own world record for the largest wave surfed when he caught a wave reported to be around 100 feet tall off the coast of Nazaré on Monday. If the claims are verified, it will mean that McNamara, who was born in Pittsfield, Mass., but whose family moved to Hawaii's North Shore when he was 11, has beaten his previous record, which was also set at Nazaré, at 78 feet tall in November 2011.