Bioluminescent Ink Plume in Water

A plume of biolum ink billows in still water like a celestial flower, hushed and meditative. The plume’s surfaces are silky and semi-translucent with feathery edges, inner filaments threadlike, a few tiny air pearls caught within. Depth layering features a soft gradient veil in the foreground, the plume midplane, and a uniform abyssal tank background; focus is centered on the plume’s core whorl; medium DOF preserves inner filament clarity with perimeter melt. Light is inner cyan-violet glow with turquoise rim scattering and faint magenta interference fringes; grading is cool with gently lifted midtones and firmly seated blacks. Environment offers minimal debris and two delicate counter-currents that arc toward the center. Camera is side-on at eye height with a normal FOV, centered bouquet composition, 16:9 crop with smooth edge falloff. Style is high-speed liquid macro blended with volumetric CGI and optical diffusion. Reserve the top ~12% and both bottom corners as protected negative space consisting of soft, low-detail, background-matched areas; confine all luminous and detailed activity to the central field only.