a beautiful mermaid looking at the sunken city of Atlantis under water, ray of sunlight, stunning grand architecture, art by Alena Aenami, 8k octane beautifully detailed render, post-processing, extremely hyperdetailed, intricate, epic composition, grim yet sparkling atmosphere, cinematic lighting + masterpiece, trending on artstation, very detailed, vibrant colors, Art Nouveau, volumetric god rays, deep underwater scene