The Fibonacci sequence works in nature, too, as a corresponding ratio that reflects various patterns in nature — think the nearly perfect spiral of a nautilus shell and the intimidating swirl of a hurricane.

In nature, the Fibonacci sequence often appears in plant growth patterns, specifically in the arrangement of leaves, branches, and seeds. This pattern is known as phyllotaxis.

Some examples of the golden ratio in nature are seen in the spiraling pattern of seeds in a sunflower head, the scales of a pinecone, the unfurling of a growing fern and the chambers of a nautilus shell.