Magical underwater mermaid birthday story, cinematic cartoon animation, dreamy pastel color palette with bright glowing accents, sparkling glitter everywhere, soft magical lighting, cute little mermaid with long pink hair exploring a beautiful fantasy ocean world. She discovers a glowing magical pearl inside a giant seashell on the ocean floor. The pearl releases sparkling magic particles and illuminates the underwater kingdom. Friendly dolphins joyfully swim around her and guide her through colorful coral reefs, glowing jellyfish, pearl caves, sea horses and shimmering underwater tunnels. The ocean is filled with pastel pink, turquoise, lavender and aqua colors, dreamy bubbles, glitter trails and fantasy marine plants. The mermaid rides with dolphins toward a glowing underwater birthday castle made of crystals and pearls. Cute sea animals gather for a magical birthday celebration with floating lights, sparkles and enchanting atmosphere. Pixar-style 3D cartoon, emotional fantasy mood, ultra cute characters, cinematic camera movement, magical fairytale underwater world, high detail, soft glow, whimsical children’s animation style.
