Surf: Kaifu River, in Tokushima, is one of the best quality rivermouth waves in Japan. It needs a moderate SE-S swell and any W wind to begin throwing up some seriously hollow rights for the big crowds that appear on the few days a season that it really works. There’s a short left off the peak and the neighbouring beach gets good too. Definitely for experienced surfers only as the rips are heavy, boulders are shallow and the tetrapods are close. Environment: It’s about 45min from Cape Muroto, and it's in the heart of the scenic Ana Quasi national coastal park. When it’s on, it’s guaranteed busy, but especially so on Sundays. Steps make access easy, but the current is devilishly fast.