underwater space cities, intricate detailed, photo realistic, cinematic lighting, octane render 
underwater space cities, intricate detailed, photo realistic, cinematic lighting, octane render --q 2 --v 4 --s 250 --upbeta
underwater space cities
intricate detailed, photo realistic, cinematic lighting, octane render
an underwater scene with a castle and fish
an underwater scene with a castle and fish
an underwater scene with a submarine and fish
an underwater scene with a castle in the water