Caulerpa Trabecular Gothic Hall

You are standing inside a single living cell, though nothing about the space suggests smallness — the hollow corridor of a *Caulerpa* stolon lumen stretches away before you like the nave of a Gothic cathedral, its curved walls radiant with the packed emerald and viridian luminescence of thousands of chloroplasts glowing in diffuse transmitted light, the cellulose matrix between them catching the green as a faint silver-gold textile weave pressed against translucent glass. This is a coenocytic organism: the entire *Caulerpa* plant — holdfast, stolon, upright fronds — constitutes a single continuous cell, its cytoplasm undivided by any internal wall, held open and pressurized by the vacuolar fluid that now fills the dark bottle-green space around you. The trabeculae crossing the lumen are cytoplasmic strands, tensile structures of condensed ectoplasm that brace the cell wall against collapse under its own turgor, and they recede in ranked perspective — nearest ones thick and ivory-warm, catching the chloroplast glow, the furthest reduced to cold hairline threads fading into luminous obscurity — their pointed junctions with the curved wall forming arches no architect designed. Along these strands and drifting free through the vacuolar fluid move clusters of amber granules, organelles and starch bodies carried by cytoplasmic streaming at speeds too slow to register except as the faintest suggestion of current, golden motes suspended in a cathedral that has lit and held itself open, without a single wall between its rooms, for the entire duration of its life.