Video transcript
The full text of what is said and shown.
Swell arrives at an angle
On the sand, always head-on
Shallow water slows the wave
Ten meters down, it's still racing
At fifty centimeters, it crawls
Coming in at an angle, one end touches bottom first
That side brakes, the other keeps going, and the crest pivots until it comes in head-on
Except near a headland: there, waves bend toward the point and hit harder
That's what makes the good surf spots
Whatever the coast, a wave's last move is to turn toward you

