In mathematics, Fibonacci numbers are an integer sequence created when each subsequent number following the first two numbers is the sum of the preceding two:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144…
These sequences can be seen everywhere in nature – in the kernel pattern of a sunflower, the petal arrangements of a rose, the scales of a pineapple, the sections of a piece of fruit, bee hives, shell growth of a nautilus, and in the bracts of a pine cone.
In the structure of a pine cone, beginning from the center where the cone is attached to the tree limb and counting outward, the number of spirals extending both clockwise and counter-clockwise will typically be two consecutive Fibonacci numbers.
In this cone, there are 8 clockwise and 13 counter-clockwise spirals.