Stop motion ... that moves

A Google+ MOTION* Autoawesome

This animated gif produce by google+ had me a bit mystified. Waves just don't rebreak like that!
The I realised I was panning along a breaking wave with a telephoto taking this set. So the series should stack together like the series for a panorama. What has seemed to have happened is the images have been matched up on the white wash of the broken wave, setting this as a fixed point, If you look at the wave in the foreground you can see it breaking shape is moving to the left.