Legendary surfer Rabbit Kekai - at 84, the oldest competitor in international surfing events - has said hopes to continue boarding until he is 100.
Kekai is still competing - and still winning
Kekai has ridden the daunting Pacific waves off the coast of Hawaii for nearly 80 years, and has long since been inducted into surfing's Hall of Fame.
But, despite his age, he still competes in open surfing events - where the average opponent is less than a quarter of his age.
"I'm still looking for 100," Kekai told BBC World Service's Outlook programme.
"I've made it till now, and I think I'll make it."
Kekai's longevity in the highly hazardous sport is remarkable.
Known for his "lucky rabbit's foot", he began entering competitions as soon as he learned to surf as a four-year-old child, being taught by his uncle.
"From then on, every day I would come down and ride the board," he said.
"In those days, the boards would be about 14-16 feet long, made of corn, and very heavy - about 180lb (81kg).
"You'd get on the board, paddle it, catch the wave, stand up - and when you got to the end of the ride, you didn't turn the board round like you do now, you just turned yourself around."
He also described the harsh way he was taught to swim.
"They used to grab us by the seat of the pants and throw us into deep water," he said.
"You had to tread water just to survive.
"You'd come back to where they threw you off, at the pier, and you'd climb up the steps - and they'd toss you in again.
"The only way you could stop being tossed in was to swim to the shore, about 100 yards (90 metres) away. From then on, surfing becomes easy."
Kekai was out in the surf when the Japanese attacked Hawaii's Pearl Harbor in 1941 - the event that triggered full US participation in World War II.
"We were out in the water when that happened - looking down the water, we could see all the smoke," he said.
"We got in and tried to go down and help, but they wouldn't let anybody get in there."
Kekai's legendary status has meant that he has long been considered the teacher of choice for some of America's biggest surf fans.
Among those he has trained are actors Gregory Peck, David Niven, and Kirk and Michael Douglas, who he said "excelled".
Rabbit taught Michael Douglas to surf in just four days
But surfing in Hawaii has been blighted in recent years by reports of "surf rage" - surfers, kayakers and other sea users competing for waves and cutting each other up, leading to fighting on beaches.
Kekai said that he felt there were simply too many people in the surf, which was causing the problem.
"There's not enough room out there," he said.
"There are territorial rights - people who live there and surf there every day. People from California or the mainland come in, and that's when the fights start.
"They come in with an attitude, and that's bad."