dynamics of interfering waves 

Positioning system by interference of waves

Polynesian people (e.g. from the Marshall Islands) can analyse the intensity and angel by listening to the splash sounds of sea waves. So they even can localize islands beyond the horizon on the high seas. (more...)

Polynesian marine "map" based on waveanalysis

water surface
the complex addition of interfering waves

Applet with interference simulator:
Remote Sensing of Ocean Dynamics: 

Computing, image analysis, and spatial statistics of ocean patterns/ Lund University, Australia:

The ocean as a complex system

Institutions like the Alfred-Wegener-Institut for polar and oceanic research explore the complexity of the oceans. 

interfering water surface