Another Hawaii nalu (wave) rumbles toward shore, demonstrating the awesome power of water and wind.
Waves build up over tens, hundreds, or even thousands of miles as wind organizes them and nudges them forward little by little. Given enough time, this simple process moves thousands of pounds of sea water from place to place.
This power culminates onshore when something finally gets in the way of the oncoming surge. The end result is a powerful wave crashing on the coast.
And we could watch this happen for hours.