A low-angle medium shot captures a mermaid swimming in the vast, deep blue ocean, positioned centrally and looking back toward the viewer with a gentle smile. She has short, vibrant blue hair, sparkling green eyes, and a slender build; she wears a delicate white dress and a simple black choker. Her body is arched elegantly, head tilted, with her arms outstretched and reaching toward the camera in a dynamic pose that emphasizes perspective and foreshortening. Her lower body is a long, powerful fish tail covered in iridescent blue scales that shimmer under the water. She is surrounded by a deep-sea environment featuring a natural seabed, with bubbles drifting around her and brilliant sunbeams piercing through the surface to create dancing underwater caustics. The visual style is that of shojo manga, utilizing delicate lineart, subtle screentone, and soft focus. The atmosphere is light, airy, and dreamy, enhanced by sparkle effects and floating flower motifs.