Prompt: A serene underwater bedroom sanctuary shaped like a bubble. The walls mimic the gentle blue hues of the sea. The bed is nestled within a giant clamshell and draped with sheer, pearlescent fabrics. Bioluminescent corals and anemones illuminate the space with a soft glow. Playful dolphin and mermaid plush toys add a sense of fantasy. Schools of colorful fish decals swim across the walls, creating a tranquil oceanic theme. The overall atmosphere is peaceful and magical, reminiscent of a dreamy underwater world.