John Edmark, designer, sculptor, artist, animator and the man behind the fascinating series of 3-D printed zoetropic structures called 'Bloom', has created a series of stop-motion shorts with Cacti. The films illustrate the inspiration and natural growth-pattern behind the 'Bloom' sculptures.
"For each frame of the animation the cactus is rotated 137.5º (the golden angle) which creates the illusion that the areoles are emerging from the center of the cactus. The reason this works is that the cactus grows by producing new areoles one at a time, with each new areole positioned 137.5º around the center from the previous areole. So, in a sense, the animation reiterates the cactus's growth process." - John Edmark