(Bioluminescent glow, ethereal ocean) A scene where a towering, radiant blue crystal emerges from the depths of a mystical ocean, surrounded by ethereal jellyfish with iridescent tendrils. The crystal pulses with an otherworldly light, as if it holds the essence of the ocean itself. The jellyfish float gracefully around it, their bioluminescence blending with the crystal’s glow, creating a harmonious dance of light in the deep, dark waters. [Cosmic echoes] ripple through the scene, blurring the line between reality and fantasy.