Rising Bubble Column

A look piece for the tank: a slim rising bubble stream 0.4 m tall built as a loose vertical spiral of faceted translucent spheres growing from 4 mm at the base to 12 mm near the top, offset off the vertical axis so no bubble is skewered by its neighbour.

风格：low-poly, flat-shaded vertex colors, no textures, 2 materials: the shared opaque one plus a distinct surface (glass, water or chrome), which stays its own mesh through mergeAssets rather than merging into the rest; shares palette and scale with its kit