Wave. Surfing. Surfer. A storm out at sea churns the surface. Creates a chop. Smaller, then larger wavelets. These amalgamate, with enough wind, into heavy seas. What surfers are waiting for on distant coasts is the energy that escapes from the storm. It radiates outwards into calmer waters in the form of wave trains. Groups of waves, increasingly organised, that travel together. Each wave sets off a column of orbiting wa...