If you see people flying over the water the next time you visit the beach, your eyes aren’t playing tricks on you. The sport of flyboarding has people soaring over the sea on water-propelled devices. The activity, which appeals to adventure lovers[1] , is popular in coastal cities on the Red Sea in Saudi.

Sami Al Omari, who first experienced the sport while vacationing in Greece, says flyboarding makes him feel like he’s on top of the world. “The most beautiful thing is that you ...