Pro surfer Mark Visser wore a LED-covered vest and surfboard while riding 30-40 foot waves off Hawaii. The visual effect was stunning, as well as difficult to capture on film [sic]:
Engineered LED lights were built into a bupuancy vest and modified into the surfboard. The lighting technologies were created especially for the project by Solus Corporation using ground breaking NASA submarine lighting to ensure the wave and board were lit in the right places, at the right time and illuminated the wave without hindering the vision of Visser, the jet ski drivers and the helicopter pilots.
Link via Super Punch
Visser is clearly the German term for, "Balls of Steel"