Two surfers ride a 50ft wave at Waimea Bay on the north shore of Oahu in Haleiwa, Hawaii
Surfers paddle out during a pre-contest surf
Six surfers drop into a wave during pre-contest surfing
Carlos Burle (left), of Brazil, Jamie O'Brien (centre), of Hawaii, and Kala Alexander, of Hawaii, drop down the face of a wave in the first heat of the the Quiksilver (in Memory of Eddie Aikau) surfing contest
Makuakai Rothman, Sunny Garcia, and Ibon Amatrian ride a wave during the first round
Professional surfer Mark Healy wipes out on a 40ft wave
Professional surfer Peter Mel drops into a 35ft wave on the north shore of Oahu
Kelly Slater competes in the second heat
Surfer Kelly Slater punches the air after surviving this wave in the second heat