Jellyfish glowing in dark sea vertical

A solitary bioluminescent jellyfish drifts upright in a deep vertical expanse, its translucent bell radiating soft teal and violet light into the surrounding dark water. The intent is immersive and serene, framed for a 9:16 tall crop to emphasize vertical motion and graceful tentacle trails. Surfaces remain unlettered and clean, with the jellyfish skin glossy and slightly iridescent, and delicate filaments that read as thin glass and silk against the water. The setting is deep sea with a cool, clear atmosphere and a gentle particulate haze that catches the glow. The primary focus resolves on the bell and nearest tentacle edge in crisp detail, with moderate layering fading into deeper, softer planes. Light sculpts forms with a gentle separation and subtle rim glow, producing an overall cool color bias balanced by pale green highlights. Composition favors a tight, tall frame viewed at eye level with narrow negative space above and below to accentuate rise, and a slightly off-center placement for elegant tension. Small drifting plankton particles and a faint, distant coral silhouette serve as story cues and scale anchors. Render as a photorealistic digital painting with finely textured water and luminous scattering, capturing calm kinetic drift and the slow undulation of the jellyfish.