Prompt: Portada de libro mundo submarino, fondo oceano, ciudad futurista, edificios rascacielos bajo el mar., professional ominous concept art, by artgerm and greg rutkowski, an intricate, elegant, highly detailed digital painting, concept art, smooth, sharp focus, illustration, in the style of simon stalenhag, wayne barlowe, and igor kieryluk.
Negative prompt: cielo con nuves, luz solar.