Drone warning helps surfer escape shark circling his surfboard near California beach

A drone photographer spotted a shark swimming dangerously close to a surfer off Seascape Beach in Aptos, California, then revved his drone motors to warn him before the shark turned away.

A drone photographer spotted a shark swimming dangerously close to a surfer off Seascape Beach in Aptos, California — then revved his drone motors to warn the surfer before the shark finally turned away.