What is the connection between the Quran and the chambered nautilus shell? The shape fits the gradually descending size of the Quranic surahs, which, unlike chapters in most human-authored books, are each separate self-contained “enclosures” of text — the word “surah” means “enclosure”—, each containing words found only in that surah and nowhere else, yet adjacent surahs are connected by small shared references, all of this being similar to the chambers of the nautilus shell.
For the living nautilus, a cephalopod or “head-foot”, it provides both protection and a system of propulsion capable of “neutral buoyancy,” the same property that keeps the human brain, our “head-foot,” safe from gravity which would otherwise have pulled the brain’s delicate tissue against the skull, damaging our uvery-much-essential neurons. Herein lies a metaphor on many levels.
The downloadable PDF below gives more details of the amazing connections between the Quran and this ancient creature’s shell, long noted for its beauty and inspiring sacred geometry. Beyond that are Quranic and scientific connections which ultimately make this shape the perfect way to present the Quran as a whole, giving us a way to envision and interpret its multiple depths of meaning.
Also, this link gives a discussion among mathematics and science professors/ scholars on whether or not the chambered nautilus shell is an example of a golden spiral. To which the answer is not precise, but then, life is more complicated than it is precise.