Apple Watch saves kitesurfer from potential shark encounter, Tim Cook reacts with 'wow'

Apple’s smartwatch ads are full of feel-good stories about how the wearable changes people’s lives for the better, mainly on the physical activity side of the everyday spectrum, but this next story is something else, and forced even Tim Cook to react.

Armed with his kitesurf and Apple Watch 3 on his wrist, one John Zilles took against the waves on a new underwater hydrofoil wing, but about a mile in, he wiped out, and couldn’t get his heavy kit airborne again. Thus, he had about two hours of slowly swimming against the current with all the kite …