Jack London,
The Cruise of the Snark
(1913)
“ It is the bottom of a wave striking against the top of the land that is the cause of all surfs.But the transformation from a smooth undulation to a breaker is not abrupt except where the bottom shoals abruptly. Say the bottom shoals gradually for from quarter of a mile to a mile, then an equal distance will be occupied by the transformation. Such a bottom is that off the beach of Waikiki, and it produces a splendid surf- riding surf. One leaps upon the back of a breaker just as it begins to break, and stays on it as it continues to break all the way in to shore. ”
