I took my first ocean dive in water so clear it felt like floating in glass. The visibility was forty meters in every direction. That kind of openness is unsettling when you're used to walls.
About twenty meters down, I noticed a nautilus shell lodged between two rocks. The spiral was unmistakable: each chamber a precise 1.618 times the volume of the last. Nature's most patient mathematician.
There's a particular calm to diving that has nothing to do with the silence (which is relative — you hear your own breath constantly, like a meditation gone mechanical). The calm is about compression. Everything non-essential is squeezed out by depth.
I've since started tracking my dives in a log I built myself. Depth, duration, surface interval, water temperature. What I'm looking for is a pattern. Do my best dives cluster at certain depths? At certain intervals between dives? So far: unclear. But the data is accumulating.
The nautilus doesn't care about any of this. It's just building its house one chamber at a time, trusting the ratio.