A vivid and painterly composition featuring **graceful dolphins, elegant belugas, and majestic marlins swimming harmoniously together** in a deep oceanic setting. The dolphins exhibit sleek, silver-grey bodies with playful expressions, while the belugas display their smooth, pearly-white forms, radiating a gentle glow. The marlins, with their long, sharp bills and vibrant blue and silver scales, add a dynamic sense of motion to the scene. The atmosphere is enhanced by a **subtle bioluminescent glow effect** that scatters soft glimmers of turquoise light throughout the composition, creating depth and a sense of underwater wonder. The interplay of **cool blue highlights and deep sea shadows** evokes a serene, almost magical ambiance. Tiny bubbles and light rays filtering through the water add a dynamic, surreal quality to the scene. The overall aesthetic is vivid yet balanced, emphasizing the **contrast between the glowing, graceful marine creatures** and the dark, mysterious ocean depths. Rendered in **8K ultra-detail**, the textures are hyper-realistic, while the colors glow with an intense vibrancy, embodying an elegant harmony of natural beauty and luxurious simplicity.