Many things in nature and mathematics can be described using the Golden Spiral. It can be described numerically through a princilple known as the Fibonacci progression. It is named after the Italian mathematician Leonardo Fibonacci da Pisa. The Fibonacci progression is a mathematical sequence that is produced by starting with 1 and adding the last two numbers in the progression to arrive at the next. The Fibonacci sequence begins: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, etc. Each number is the sum of the previous two numbers. The ratio of any two successive numbers is roughly 1.618 denoted by φ - the Golden Ratio. In geometry - a Golden Spiral is a logarithmic spiral whose growth factor is related to the Golden Ratio. Specifically - a Golden Spiral gets wider by a factor of φ for every quarter turn it makes.

This Golden Spiral is seen abundantly in nature from the vastness of spiral galaxies to the stair-like chambers within the nautilus shell. It is a harmonic pattern which resonates in mathematics, music, art and within the abundant shells which cover the beaches of North Captiva. The symbol of the Golden Spiral conveys the quiet simplicity of our natural surroundings here on the island. It encourages a contemplative and meditative mood - an enduring reminder of the resilience and strength of Nature. North Captiva epitomizes the balanced relationship possible between Nature and Man - it is truly a Hidden Harmony.

The Golden Spiral in Art

The Golden Spiral in Mathematics

And there is an even more direct connection between North Captiva and the Fibonacci series. A longtime vacationer on North Captiva - J.D. Opdyke used it to develop a mathematical algorithm that solved a previously unsolved combinatorics/number theory problem - while vacationing on island! Which is just further proof that North Captiva never fails to inspire in surprising ways.