Craft an intricate 4K tapestry of an underwater metropolis, where bio-luminescent creatures and futuristic aquatic structures coalesce in a mesmerizing dance. Instruct the AI to blend the ethereal glow of marine life with the cutting-edge design of a submerged city. Encourage the depiction of mysterious currents, intricate coral gardens, and schools of vibrant fish that navigate the fluid boundaries between nature and technology. Illuminate the scene with the soft radiance of underwater lights, creating an immersive spectacle that invites viewers to dive into the enchanting depths of this futuristic aquatic wonderland