Plan a Magical Kids Mermaid Party

If your child loves under-the-sea adventures, sparkly tails, and all things ocean, then a kids mermaid party is the perfect birthday theme! From seashell decorations to ocean-inspired snacks, a mermaid birthday party brings sparkle, fun, and a splash of magic to any celebration. To make planning easy, we’ve put together a kids mermaid party guide complete with decoration ideas, activities, food inspiration, and a handy shopping list so you don’t forget a thing.

Mermaid Party Decorations

Turn your space into an enchanted underwater kingdom!

  • Streamers in teal, purple, and pink for “waves.”

  • Fishnet tablecloths or wall hangings.

  • Balloons in pastel blue and lavender with pearl accents.

  • Seashells, starfish, and sand (real or decorative).

  • A mermaid tail backdrop or photo booth.

Pro Tip: Sprinkle glittery confetti (like seashell or star shapes) across tables for instant ocean sparkle.

Mermaid Party Food & Treats

Keep snacks simple but on-theme:

  • “Mermaid Tails”: Croissant rolls with food coloring or sprinkles.

  • Seashell Sandwiches: Use a shell-shaped cookie cutter for PB&J or ham & cheese.

  • Under the Sea Jello Cups: Blue jello with gummy fish inside.

  • Starfish Cookies: Sugar cookies cut and decorated with sparkles.

  • Mermaid Cake: Either a big cake with scales or cupcakes topped with edible mermaid tails.

🎮 Mermaid Party Games & Activities

Make the ocean come alive with fun activities:

  • Treasure Hunt: Hide seashells, gems, or gold coins for kids to find.

  • Pin the Tail on the Mermaid: A fun twist on a classic.

  • Craft Station: Kids decorate seashells or make “pearl” necklaces with beads.

  • Musical Seashells: Like musical chairs, but with seashell cutouts.

  • Water Play (if outdoors): Kiddie pools or sprinklers for splash fun.

Mermaid Party Favors

Send little mermaids and mermen home with magical goodies:

  • Glittery slime in jars (“mermaid goo”).

  • Seashell necklaces or bracelets.

  • Mermaid stickers and temporary tattoos.

  • Mini bubbles in seashell-shaped bottles.

  • Starfish hair clips or mermaid crowns.

Mermaid Party Shopping List

Decorations

  • Streamers (teal, purple, pink)

  • Balloons (blue, lavender, pearl)

  • Fishnet tablecloths or décor

  • Seashells, starfish, ocean props

  • Mermaid backdrop / photo booth

Food & Cake

  • Sandwich ingredients + shell cookie cutter

  • Croissants / sprinkles for “tails”

  • Blue jello + gummy fish

  • Cookie dough + starfish cutter

  • Mermaid cake / cupcakes

Games & Crafts

  • Plastic gems, seashells, gold coins (treasure hunt)

  • Mermaid game poster (pin the tail)

  • Beads, strings, paint, or glitter for crafts

  • Seashell cutouts (musical seashells)

Party Favors

  • Glitter slime jars

  • Stickers & tattoos

  • Mini bubbles

  • Mermaid accessories (hair clips, crowns, bracelets)

Final Mermaid Party Tip 🌊

Organize your supplies into bins—decorations, food, games, and favors—so setup is a breeze. With this list, you’ll be ready to host a magical mermaid birthday party filled with sparkle, laughter, and unforgettable under-the-sea memories.