How the fuck does that even happen??? Wow.
Not sure, but it might be pre-historic and most definitly an EXTREME unliveable condition cold. Such as an Ice age or something.
I was doing some searching about moving water freezing because it's a very rare occurance and must be very cold to happen and found this video:
Not a tidal wave, just regular waves VERY small in comparison, but still cool.
http://www.break.com/index/newfoundland_frozen_waves.html