PROMPT:
A futuristic underwater metropolis inhabited by anthropomorphic sea creatures, set amidst a kaleidoscope of coral reefs, with iridescent jellyfish lanterns illuminating the winding streets, where a group of six friends, each with unique aquatic features, are gathered around a gleaming, high-tech, turquoise submarine, adorned with intricate, swirling patterns reminiscent of oceanic currents, surrounded by schools of rainbow-hued fish darting about, against a backdrop of undulating, electric blue waves, with bursts of sunlight filtering down from above, casting shimmering highlights on the characters' vibrant, expressive faces, utilizing a diverse palette of bright, jewel-toned colors, emphasizing emerald green, sapphire blue, amber, and turquoise, with meticulous attention to textures, reflections, and lighting effects to achieve a photorealistic, comic book aesthetic.