How to Create a Mermaid-Themed Party
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Make a splash with an enchanting mermaid-themed birthday party—a celebration that’s full of ocean sparkle, underwater magic, and seashell treasures! Whether your little one dreams of mermaids, shimmering sea creatures, or a magical under-the-sea adventure, this theme brings beauty, fun, and whimsy to life.
Here’s your ultimate guide to planning a mermaid birthday party that’ll be a tidal wave of fun!
Step 1: Send Out Magical Mermaid Invitations
Start the excitement with dreamy, ocean-inspired invitations. Think soft blues, aquas, lilacs, and shimmering accents.
Try playful phrases like:
• “Make waves—[Child’s Name] is turning [Age]!”
• “Join us under the sea for a mer-mazing celebration!”
• “Calling all mermaids and ocean adventurers—it’s party time!”
Add seashell stickers or a sprinkle of eco-friendly glitter for an extra magical touch.
Step 2: Set the Scene Under the Sea
Transform your space into an underwater paradise with soft, flowing decorations and marine-inspired textures.
Decor Ideas
• Iridescent streamers and bubble balloons
• Netting draped with shells and starfish accents
• Mermaid tail banners and ocean wave garlands
• Tablecloths in aqua, teal, and pearl pink hues
• Shell or fish scale-patterned tableware
• Jellyfish lanterns made from tissue paper and ribbons
Create themed areas like “The Coral Reef Snack Bar,” “Seashell Craft Cove,” and “The Mermaid Lagoon.”
Step 3: Dress-Up and Mermaid Accessories
Encourage guests to arrive in ocean-themed attire—think mermaid tails, sparkly dresses, or sea creature costumes!
You can also provide:
• Mermaid headbands or flower crowns
• Pearl necklaces and shell bracelets
• Face glitter or stick-on jewels
• Temporary tattoos with sea creatures or scales
Set up a “Mermaid Makeover Station” for guests to get glammed up with accessories and face sparkle.
Step 4: Fun-Filled Underwater Games & Activities
Get ready for some serious splashing fun with these mermaid-inspired games and activities:
Mermaid Tail Race
Use sacks or fabric tails for a fun hopping race across the “seabed.”
Ocean Treasure Hunt
Hide sea-themed items (shells, pearls, mini mermaid trinkets) and let the children hunt for treasures.
Make Your Own Shell Crown or Bracelet
Craft station with shells, beads, and sparkly ribbon.
Pin the Tail on the Mermaid
A fun twist on the classic party game—kids try to place the glittery tail on a mermaid poster while blindfolded.
Under-the-Sea Bubble Dance Party
Play ocean-themed tunes and blow bubbles for an interactive dance party!
Step 5: Serve Sea-Sational Snacks
Turn your food table into a “Coral Reef Café” with themed treats and vibrant colours.
• “Mermaid Sandwiches” using fish or shell cookie cutters
• “Seaweed Dip” (guacamole) with veggie sticks
• “Octopus Hot Dogs” (cut hot dogs into octopus shapes)
• “Ocean Jello Cups” with gummy fish inside
• “Seashell Cookies” or macarons
• Popcorn in mermaid print boxes
• “Mermaid Punch” with pastel fizzy drinks and edible glitter
Add fun labels like “Pearl Pops,” “Sea Snacks,” or “Ocean Bubbles.”
Step 6: Bake a Magical Mermaid Cake
Make your cake the stunning centrepiece of your underwater world:
• Mermaid tail or seashell-shaped cakes
• Ombre wave-effect icing in sea colours
• Cupcakes topped with fondant starfish or pearls
• A cake topped with a shimmering mermaid figurine or edible coral reef
Top it off with a cake topper that reads “Shell-ebrate [Child’s Name]!”
Step 7: Magical Mermaid Party Bags
Send your guests home with a bit of sea sparkle! Fill party bags with:
• Mini mermaid figurines or shell trinkets
• Sea-themed stickers or temporary tattoos
• Mermaid tail pens or notebooks
• Shell necklaces or pearl bracelets
• Ocean slime or putty in sparkly tubs
• Sweet treats wrapped in aqua or iridescent packaging
Label the bags with phrases like “Thanks for making waves with us!” or “A splash of fun to take home.”
Step 8: Create a Mermazing Soundtrack
Keep the underwater vibes going with a mermaid-inspired playlist. Include ocean sounds, whimsical tunes, and even some sing-along mermaid movie soundtracks to create a magical atmosphere throughout the party.
How Winterberries Can Help You Create a Mermazing Party
At Winterberries, we make magical party dreams come true—whether your little one wants to dive into the deep blue sea or dance under shimmering waves.
✓ Mermaid-Themed Partyware & Accessories
From shell-patterned plates and mermaid tail napkins to ocean balloons, table décor, and party games—we have everything you need to create a beautifully themed celebration.
✓ Can’t Find That Perfect Item? We’ll Source It!
If you’re looking for something specific—like a rare mermaid balloon, custom seashell bunting, or extra sparkle—we’ve got you covered. As part of our party planning service, we’ll happily source those special touches for you.
✓ Custom Party Bags & DIY Kits
Want themed party bags or mermaid craft kits for your guests? We offer bespoke solutions to match your party vision, right down to the last seashell sticker.
✓ Gifts, Favors & Finishing Touches
From magical gifts to dreamy extras, we help you add those little wow factors that make the day truly unforgettable.
✓ Full-Service Party Planning
Prefer to relax while the magic happens? Our expert planners can handle everything from theme styling and decoration setup to sourcing and coordination. All you need to do is enjoy your little mermaid’s big day!
At Winterberries, we’re here to make parties fun, fabulous, and stress-free—whether you need just a few accessories or the full party planning experience.
Ready to make a splash?
Browse our mermaid collection online or contact us to start planning your under-the-sea adventure at info@winterberries.store. Your child’s dream party awaits—and we’d love to bring it to life.
Need more party inspiration?
Check out these mermaid-themed party blog posts:
https://stephaniehanna.com/mermaid-birthday-party/
https://www.partydelights.co.uk/blog/throw-a-mermaid-party-for-a-little-mermaid
https://www.atouchofpinkblog.com/mermaid-themed-birthday-party/