A ethereal jellyfish with translucent bell made of crystalline glass and flowing tentacles of luminous bioluminescent threads floating through an underwater cathedral of giant glowing coral spires at twilight, surrounded by schools of tiny luminous fish swimming in spiral patterns and delicate sea-anemone spirits with glowing cores, fine line art with soft watercolor fills, botanical frame border of delicate sea-vine roses and tiny luminous pearl droplets, magical realism, soft teal light filtering through water creating ethereal prismatic glow, palette of deep ocean teal, luminous bioluminescent blue, soft rose, crystal white and glowing amber, enchanted aqueous sanctuary at the threshold of dusk, whimsical fantasy art