PHI exists quantitatively in all fauna and flora. Sunflower petals grow at a ratio of 1.617 . The ratio of the number of female bees and male bees in the hive is PHI . The ratio of the next layer of pollen to the pollen of each layer inside the flower is PHI . The ratio of leaf growth to each level of the plant is PHI . The spiral of snail-oyster-sea-shell also somehow contains PHI , this ratio exists in everything from fish to wild prey . PHI is found everywhere in magnetic field or electric field , in simple rhythmic vibrations , in thermodynamics .