As a big-wave surfer, the Brazilian adrenaline junkie set records at the highest surf break on Earth. She’s still committed to the ocean—now, though, she’s dedicating herself to helping keep it clean ...

began texting him. Like any self-respecting big wave surfer, the 24-year-old Slebir and his pals constantly watched the data captured by buoys hundreds of miles out in the Pacific Ocean that could ...