Exceptional, imaginative, concept art illustration, birds eye view, mermaids swimming near an underwater castle, hidden entrances, colorful fish, seaweeds, shells, mysterious creatures, magical ambiance, diffused daylight through aquatic depths, soft pencils, digital tools, surreal, fantastical, watercolour texture, iridescence, immersion, aerial perspective, dreamlike, Light grids, Fujifilm Superia, Arcade, Time-Lapse, Nuanced detail by: Gilbert Stuart, Giorgio de Chirico
(Mermaids swimming near an underwater castle.