Emerald Leprechaun in an Underwater Cave

Ultra-detailed cinematic 3D render of a leprechaun underwater in a cave. The leprechaun wears a vivid green suit and a tiny hat, with a red beard and webbed hands. He stands on slick coral rocks beside a glowing pot of gold that emits a warm amber light. Surrounding features include stalactites and stalagmites, swaying kelp, and bioluminescent algae. Beams of light pierce the water from above, creating volumetric lighting and realistic caustics on the rocks; bubbles rise around him. Realistic materials with subsurface scattering for skin and fabric, photorealistic water, and highly detailed textures for rock and coral. Color palette of emerald greens, deep blues, and gold glow; mood magical, tranquil, and mysterious.