Bikini Bottom, underwater cityscape, colorful coral reefs, seaweed forests, kelp, jellyfish, sunny day, bright blue water, soft light, Stephen Hillenburg style, whimsical, playful, exaggerated features, bold lines, vibrant colors, dynamic composition, 3D-like depth, fantasy creatures, fish-shaped buildings, wacky architecture, winding streets, bustling city life, energetic atmosphere.