How Did Duke Kahanamoku Die?

Duke Paoa Kahinu Mokoe Hulikohola Kahanamoku was a Hawaiian competition swimmer, lifeguard, and popularizer of the sport of surfing. A Native Hawaiian, he was born three years before the overthrow of the Hawaiian Kingdom. He lived to see the territory's admission as a state and became a United States citizen. He was the world record holder of the 100-meters free style in swimming, and was a five-time Olympic medalist in swimming, winning medals in 1912, 1920 and 1924.