Oceanic

[Image: A spectator gazes out at the wave that will destroy him; via LiveScience].

This picture has been haunting me ever since I first saw it back in June: a man, presumably, stands on the coast of Hawaii in 1946, watching a tsunami rush to shore, bringing a wall of debris down upon him – a literal and terrifying experience of the oceanic.
Caused by a massive earthquake – or catastrophic landslide – off the coast of the Aleutian Islands, the tsunami made it all the way to Hawaii, and beyond. I say earthquake or landslide because there is still some controversy over what exactly caused the wave in the first place.
The Pacific Tsunami Museum, meanwhile, with an oddly titled series called the "Tsunami Survivor Video of the Month," has more general information about tidal waves in the Pacific.