"Design an image showcasing a fantastical underwater metropolis, where mermaids and futuristic sea creatures coexist with advanced technology. The cityscape should feature towering coral skyscrapers, bioluminescent plants illuminating the streets, and sleek, futuristic vehicles navigating through underwater tunnels. This prompt aims to challenge the tool's ability to render intricate aquatic landscapes with a blend of natural elements and technological marvels.", high contrast, over saturated, glossy, cartoon, 3d, 3d render, Photoshop, sketch, sketches, video game, draw, paint, painting, render, cgi, computer graphics, anime, manga, 2d art, 3d art, illustration, canvas frame, watermark, signature, username, artist name