Behold! The Art of Tandem Surfing

World champion surfing duo Kalani Vierra and Krystl Apeles show off the little-known spectacle of tandem surfing. You’ve got to see it to believe it.

Both natives of Kauai, Vierra and Apeles are the reigning SeaHawaii Tandem Surfing world champions. Competitive tandem surfing has slowly grown in popularity since it was officially recognized as a standalone division in surfing competitions in 1954. Vierra and Apeles beat out 15 other teams to claim the 2015 title in December.