A mystical sea turtle with shell of flowing constellation maps and ancient glowing runes, gliding through an enchanted underwater temple ruins at twilight, surrounded by floating luminescent jellyfish spirits with cores of soft amber light, delicate coral branches in impossible colors of luminous coral and deep violet, tiny glowing fish swimming through crystal water, fine line art with soft watercolor fills, botanical frame border of delicate sea vines and tiny bioluminescent anemones, magical realism, soft filtered light from above piercing through crystalline water creating prismatic rainbow atmosphere, palette of deep ocean blue, luminous turquoise, soft coral pink, crystal white and glowing amber, enchanted oceanic sanctuary at twilight, whimsical fantasy art