The colored lines in the animated sequence, here superimposed:
and three snapshots from what their fusion with the foam images looks like:
The sequence marks the return to pure drawing, here very colourful.
Each of the three movements is derived from a single numerical composition that appears at least once in its entirety; elsewhere in the movement, the various graphic elements appear in changing colours, with a sharp or sometimes blurred definition, in still or moving position, seen from the front or from various angles of perspective.
On a background of real aquatic surfaces, the compositions presented in the "clouds" section appear and disappear throughout the four movements of the sequence.
Pictures of clouds and airplane trails in the Parisian sky:
... and the compositions obtained by superimposing various graphic elements:
Plane trails in the Paris sky, boat wakes in the Arcachon basin or the Mediterranean sea, pure drawn elements ... and sometimes the passage of a bird not really desired, but difficult to erase from the original video.
Where we find the natural elements appearing in the last two sequences, in different arrangements and colours, in an almost unchanged chronological order.
First version of the sequence: a rather fast running of the elements ...
Second version of the sequence: slower running and the dominant blue colour ...
Third version: even slower, and all in black and white except for a few seconds.