A photorealistic 3D render of a letter submerged underwater, featuring a blend of periwinkle and canary yellow hues. The scene is set with swirling water currents and a bright, ethereal light emanating from the center, creating a high contrast and eerie atmosphere. The water surface ripples gently, exhibiting hyper-detailed liquid effects and textures. The dramatic lighting and intricate water patterns are captured in stunning 8K resolution, with an elongated 9:16 aspect ratio, providing an immersive and visually captivating experience.