Nautilus Shell Growth (2D)
A top-down projection of the same logarithmic-spiral growth a real nautilus follows, adding one chamber (septum) at a time as it grows.

• Spiral radius grows exponentially: r = 0.15 · e^b·θ
• Growth factor b is derived from the golden ratio φ
• 22 septa (chamber walls) are revealed progressively
• Tube width tapers with the local spiral radius

Growth Speed 1.0 Spiral Tightness 1.0 Reset