TEAHUPO’O, French Polynesia — Peva Levy said he felt a powerful, natural energy known as “mana” when he surfed Teahupo’o’s waves on a piece of plywood for the first time, rushing down a crumbling white surf in front of an untouched volcanic beach several years before the steady streams of surfers started arriving when the village got its first asphalt road over fifty years ago.