Algal bloom

[Kalles Fraktaler]

<a href="http://www.youtube.com/v/8Dd60I9bV04&rel=1&fs=1&hd=1" target="_blank">http://www.youtube.com/v/8Dd60I9bV04&rel=1&fs=1&hd=1</a>

It is dangerously toxic to swim in the Baltic sea if the algal boom reach the shores.

[Kalles Fraktaler]

This movie was rendered with the classic power of 2 technique.
However, for each keyframe the 4 next frames are added, so the center is antialiased up to 16x16, even if it a small area. But the result is, to me at least, as smooth as the previous technique I have used which were rendering each frame.
Also the keyframes don't get so many either, so I can examine them afterwards and correct glitches that weren't solved by my automatic function, which is far from being perfect...