Typhoon Dujuan has turned Japan’s Pacific coastline into something out of a disaster movie, with videos showing huge, wind-whipped mountains of water detonating against seawalls and rocky shorelines. According to Zoom Earth , Dujuan generated maximum significant wave heights of 9.4 meters — roughly 31 feet — as it moved away from eastern Japan on September 22. Earlier, the Japan Meteorological Agency had warned of seas reaching about 9 meters around the Izu Islands and 8 meters along parts of Kanto. Those numbers help explain the footage: dark, disorganized peaks stacking on top of one another, spray blowing off their crests and whitewater exploding against the coast. Check out one ominous clip of waves pounding the coast, linked here , and below: View this post on Instagram And those waves did real damage. At Yokosuka Naval Base, high surf destroyed part of a seawall, scattering driftwood and debris across the waterfront.…