The Mavericks on February 13, 2010 is probably one of the worst case ever happened from the spectator's point of view. But it was nicely big surf wave for surfers:
Well, here's when the wave reached the beach just that first 20 seconds was the start of a nightmare for many:
Was that a freaque wave encounter? Yes, to some extend. But the wave was certainly welcomed by the surfers. It does appears not many surfer actually caught this one. This is just showing that thing like that can really happen. Only we don't know when, where, how, or why!