Ha'a Keaulana, daughter of Brian Keaulana and granddaughter of legendary Buffalo Keaulana carries a 50-pound boulder while running across the sea floor to train for surfing. Her father teaches surfers that they should train for a four wave hold down in case of a wipeout in big surf. It is one thing to hold your breath in a swimming pool for a minute and it something completely different to swim down 30 feet, pick up a huge rock and then run as hard as you can for a minute.

--Paul Nicklen