Submarine train tunnel, aquatic landscape, vibrant underwater scene, train moving through a transparent tunnel, coral reefs, diverse fish species, detailed coral formations, clear water, light aqua, and teal blue hues, tunnel walls made of ancient stone structures, realistic train model, bioluminescent effect in the tunnel, photorealistic, high-detail, cinematic, surreal, fantasy, compositional harmony, 3D, digital art, oceanic theme, dreamlike atmosphere, peaceful vibe, seamless transition between underwater world and train.aquatic_underwater
