None of the weeds carpeting the seafloor, none of the branches bristling from the shrubbery, crept, or leaned, or stretched on a horizontal plane. They all rose right up toward the surface of the ocean. Every filament or ribbon, no matter how thin, stood ramrod straight. Fucus plants and creepers were growing in stiff perpendicular lines, governed by the density of the element that generated them. After I parted them with my hands, these otherwise motionless plants would shoot right back to their original positions. It was the regime of verticality. I soon grew accustomed to this bizarre arrangement, likewise to the comparative darkness surrounding us. The seafloor in this forest was strewn with sharp chunks of stone that were hard to avoid. Here the range of underwater flora seemed pretty comprehensive to me, as well as more abundant than it might have been in the arctic or tropical zones, where such exhibits are less common. But for a few minutes I kept accidentally confusing the two kingdoms, mistaking zoophytes for water plants, animals for vegetables. And who hasn’t made the same blunder? Flora and fauna are so closely associated in the underwater world! I observed that all these exhibits from the vegetable kingdom were attached to the seafloor by only the most makeshift methods. They had no roots and didn’t care which solid objects secured them, sand, shells, husks, or pebbles; they didn’t ask their hosts for sustenance, just a point of purchase. These plants are entirely self-propagating, and the principle of their existence lies in the water that sustains and nourishes them. In place of leaves, most of them sprouted blades of unpredictable shape, which were confined to a narrow gamut of colors consisting only of pink, crimson, green, olive, tan, and brown. There I saw again, but not yet pressed and dried like the Nautilus’s specimens, some peacock’s tails spread open like fans to stir up a cooling breeze, scarlet rosetangle, sea tangle stretching out their young and edible shoots, twisting strings of kelp from the genus Nereocystis that bloomed to a height of fifteen meters, bouquets of mermaid’s cups whose stems grew wider at the top, and a number of other open-sea plants, all without flowers. “It’s an odd anomaly in this bizarre element!” as one witty naturalist puts it. “The animal kingdom blossoms, and the vegetable kingdom doesn’t!”