Deep Sea Merfolk Warrior Concept

A striking full-body underwater character design of a powerful 30-year-old male merfolk warrior swimming gracefully in dark ocean depths. He has an athletic swimmer build, iridescent sapphire-blue scaled skin along his hips and lower body, glowing cyan bio-luminescent stripes along his spine, webbed hands with clawed tips, translucent fan-like dorsal fins, and dark silver hair floating weightlessly in water. He wears shoulder pauldrons sculpted from iridescent pearl shell armor held by braided kelp straps, and holds a gleaming three-pronged trident forged from dark volcanic glass and gold filigree. He swims near an ancient sunken stone temple ruins covered in glowing coral reefs, sea anemones, and schools of silver fish shimmering in dark water. The lighting is dramatic underwater shafts of moonlight piercing down from ocean surface far above, casting aqua blue rays and caustics light patterns across his body and temple ruins, with deep oceanic dark blue background depth. He is captured in a dynamic swimming stance, looking forward with a fierce protective gaze. Framed in a full-body diagonal medium shot creating sense of fluid underwater movement. Photographed with underwater cinematic camera clarity, crystal clear water transparency, caustics light ripples, high-detail texture on scale patterns and shell armor, fantasy art style.