Consider the hexagon. A bit of order in this universe. Nature generally has it in for old Euclid and his straight lines and clean angles, but some allowance has been made for the hexagon. Bees build them, unable to figure why. Turtles grow them witlessly, haul them around.
But it's not just a critter's trick. Snowflakes freezing up in the clouds do it, mudflats drying in the sun do it, lava does it when it cools into rock. Storms out on Saturn do it. They’ve assembled one out of clouds that sprawls across that north pole wider than three Pacific Oceans and 200 miles high. We don’t know exactly why it's there, but it shouldn’t surprise.
What similar forms can we find near as often? Simpler ones do crop up - squares in the salt shaker, triangles in the cucumbers. Go, look. But none recur or persist like the hexagon. Why?
A geometer will tell you it’s sturdy and tiles the plane. It’s efficient, too: it can encompass more area with less straight line than most anything. That’s why bees do it: to get the most honeycomb from the least wax. That’s also, more or less, why it’s a good solid shape to pull down into - for cold water or hot lava.
You want a thrill? Do yourself a favor. Go grab a handful of something round - BBs, blueberries - and roll them out on a table. Now, pack them in together tight as they’ll go. See what you get. Consider that.