A medium shot, 3/4 view of a young merman boy with shimmering baby-blue hair tied back, floating gracefully in a crystalline underwater environment. The boy has deep violet eyes and a few iridescent scales subtly dusting his cheeks and temples; he wears a white and navy blue marine-style sailor top with a nautical collar. He is positioned centrally, with his hands gently floating by his sides, his fingers slightly curled as he drifts in the current with a serene and curious expression. He is surrounded by a luminous aquatic world filled with dancing bubbles, floating plankton, and distant coral reefs. The scene is bathed in a soft, ethereal blue glow with caustic light patterns filtering down from the surface, creating a serene, magical atmosphere with a vibrant, translucent color palette and a soft depth of field.