PROMPT:
A fantastical underwater metropolis, teeming with alien-like marine life, set within a colossal, crystal-encrusted dome, illuminated by a radiant, turquoise-blue light emanating from the core of a gargantuan, iridescent jellyfish suspended from the dome's apex, its translucent, undulating tentacles stretching towards the bustling streets, where anthropomorphic sea creatures, ranging from humanoid fish to octopus-like beings, go about their daily lives, operating peculiar, steam-powered contraptions and vintage-style submarines, amidst a kaleidoscope of vibrant colors, with a focus on radiant blues, emerald greens, and sunshine yellows, while minimizing the use of pink, with highly detailed, photorealistic textures and reflections, as if captured through a high-tech, underwater camera lens, in a whimsical, comic book-inspired aesthetic.