Little Mermaid Party Ideas for the Best Birthday Ever

Little Mermaid Party Ideas for Your Under-the-Sea Celebration

Ahoy there! It’s your fellow mermaid lover and mom of four little girls back again with more exciting party ideas. This time, we’re exploring the magical world under the sea as we dive into some fantastic Little Mermaid party ideas.

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Whether you’re planning a Little Mermaid birthday party based on the 1989 classic animated film, or the new 2023 Live-Action movie, these ideas are so much fun! From enchanting decor to mouthwatering treats and captivating activities, we’ll create a mermaid-themed party that will make waves of memories for your little mermaid and her party guests. So, put on your mermaid tails, grab your starfish wands, and let’s make a splash!

Best Mermaid Party Ideas

Location is so important when planning birthday parties. A pool party is the best way to celebrate in true mermaid fashion. If your child’s birthday falls in a colder winter month, it may be possible to find an indoor pool location at a local hotel or gym facility. Check with local entertainment companies for a possible Little Mermaid character to really swim with your guests.

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If a pool is not an option, check local parks or venues that might fit the theme. For my daughter’s Little Mermaid party we held it at a local park with a “Pirate Ship” play structure which was a great way to tie in the theme.

Mermaid Decor Ideas

Transform your space into an enchanting undersea wonderland with these captivating mermaid party decor ideas. When it comes to creating the perfect mermaid-themed ambiance for your little one’s special day, it’s all about the details. From shimmering seashells to iridescent accents, we’re here to help you make a splash with decor that will leave your young guests wide-eyed and enchanted.

Let’s embark on a creative journey and discover the best ways to infuse your party area with the mystical allure of the ocean. Whether you’re celebrating by the pool, in the backyard, or indoors, these decor ideas will transport your young guests to a magical world beneath the waves.

Color Palette

Start with a whimsical color scheme featuring ocean blues, aqua, and shades of purple to set the under-the-sea vibe for your child’s special day. Touches of iridescent sparkle, like these beautiful seashell plates, add a beautiful hint of sparkle too!

Jellyfish Lanterns

Hang ethereal jellyfish paper lanterns (you can find these on Amazon or at a party supply store) to add an enchanting touch to your party backdrop. These bubble hangers were such a fun touch to our party backdrop too!

Ribbon Backdrop DIY

Using plastic tablecloths from the Dollar Tree, cut long strings and tie them to a strand of jute. Mix together ocean tones perfect for mermaid parties. This backdrop is a beautiful and budget friendly way to add color and whimsy to your party.

Seashells & Fish Nets

Use decorative fishing nets as tablecloths for an authentic, seaside feel. Mix in seashells, starfish coral and other ocean finds to add whimsy to the party decor.

Mermaid Party Food Ideas

Every little mermaid lover deserves a whimsical and delectable dining experience that complements the under-the-sea theme. Whether you’re hosting a poolside bash or an indoor soiree, we’ve got you covered with a treasure trove of ocean-inspired dishes that will make your mermaid-themed celebration a gastronomic adventure.

From mermaid cupcakes to seashell sandwiches, these food ideas will not only please the taste buds but also add an extra layer of enchantment to your little one’s special day. So, let’s wade into the delicious details and explore the best mermaid party food that’s sure to make waves!

Mermaid Cake

No Little Mermaid party is complete without a mermaid-themed birthday cake. You can order one from a local bakery or create your own if you’re feeling adventurous.

Mermaid Cupcakes

Opt for cupcakes for an easier to serve dessert option. Top cupcakes with mermaid tails or sea shells made from fondant or candy melts. They’ll be a big hit with little guests. We opted for these toppers which were a little easier and wouldn’t melt in the summer heat since our party was outside.

Chocolate Coins

Scatter chocolate coins on the dessert table for a touch of elegance and a nod to Ariel’s collection of treasures.

Goldfish Crackers

Serve goldfish crackers in a fishbowl for a delightful and savory snack that kids love.

Mermaid Cookies

Bake or order mermaid-shaped cookies decorated with icing in shades of blue and green. Clamshell cookies are easy to make and a favorite of my own daughters. Using Vanilla Wafers, chocolate pearls and blue frosting, these adorable cookies are fun, tasty and simple to make!

Sea Adventures

Get creative with your party snacks by serving “sea creatures” made from fun foods. Make octopus-shaped hot dogs, seashell-shaped sandwiches, and sea star-shaped peanut butter and jelly sandwiches. Other fun ideas include Driftwood (Pretzel Rods), Coral Skewers (Grapes and Strawberries) and Seaweed Salad.

Mermaid Trail Mix

Create mermaid trail mix with a mix of blue and purple candies, mini marshmallows, and graham crackers for a sweet and salty treat.

Ocean Water

For this easy DIY, mix Blue Hawaiian Punch, Pineapple Juice and Sprite for a bubbly fun “Ocean Water” drink your guests will love. Add seashell shaped ice cubes or dry ice to make the drink magically mist.

Mermaid Party Activities

It’s time to take the party to the next level with some fin-tastic mermaid-themed activities! After indulging in delicious under-the-sea treats and being wowed by the enchanting decor, the little party guests are sure to be bubbling with excitement.

RELATED: 23 Easy & Educational Little Mermaid Activities for Preschoolers

Now, let’s channel that oceanic energy into a world of creative fun. From crafting mermaid crowns to hunting for hidden treasures, these activities will keep the kids entertained and engaged, making your mermaid-themed celebration an unforgettable adventure. Let’s explore these party activities, and get ready to create ocean-inspired memories that will last a lifetime.

Mermaid Treasure Hunt

Transform your party space into the depths of the ocean with hidden treasures. Provide clues and maps for the little mermaids to follow, leading them to a treasure chest or pinata. Alternatively, fill a plastic pool with sand and bury little treasures for your guests to find. Gold coins, plastic gems, costume jewelry and more will be such a fun find for little ones.

Decorate Your Own Mermaid Tails

Set up a crafting station where kids can decorate their own mermaid tail pictures using paint, sequins, and glitter. They can bring their masterpieces homes as a fun reminder of the party.

Under-the-Sea Photo Booth

Create an under-the-sea photo booth with fun photo props like seashell crowns, mermaid wands, and fish masks. Let the little guests take pictures to capture the memories of their mermaid adventure.

Mermaid Sing-Along

Put on your favorite Disney tunes, especially songs from “The Little Mermaid,” and have a mermaid sing-along. Encourage the kids to perform their favorite songs from the movie.

Mermaid Storytime

Gather the little mermaids for a storytelling session with classic mermaid tales or even a reading of “The Little Mermaid.” Provide each child with a mini mermaid-themed storybook as a party favor.

Mermaid Crafts

Set up a crafting station with supplies for kids to make their own magical mermaid tiaras and starfish wands. Or find old forks at local thrift stores and let the kids bedazzle them with rhinestone stickers.

Under-the-Sea Bubble Fun

Host a bubble-making station with bubble wands and solutions for lots of bubbly fun. This bubble machine from Amazon was a huge hit at our party and we’ve used it so many times since!

Hire a Little Mermaid Entertainer

Invite a real life Little Mermaid to come to your party. Most entertainers include story time, photos, singing and possibly additional activities kids are sure to love. It’s the perfect way to make your mermaid party magical.

Mermaid Bath Bombs

As party favors, you can have the kids create their own mermaid bath bombs. It’s a fun DIY activity that doubles as a party favor.

Mermaid Party Favors

The fun doesn’t end when the party does; it continues with delightful party favors that will remind your young guests of the fantastic adventure they had. In this section, we’ll explore some enchanting mermaid party favor ideas that are sure to make a splash.

RELATED: 45 Unique Goody Bag Ideas for Toddlers

Whether it’s seashell soap, mermaid tail blankets, or mermaid keychains, these favors will leave your little mermaids and mermen with smiles as bright as the ocean’s glisten. So, let’s explore these treasures and make your little one’s birthday unforgettable with these fun goody bag ideas.

Mermaid Party Bag Favors

Prepare mermaid-themed goody bags for your little guests, filled with treasures and trinkets like mermaid stickers, ocean-themed coloring books, and seashell-shaped chocolates.

Starfish Wands

Another fun Little Mermaid party idea is to include starfish wands for every little mermaid. These wands can be both party favors and part of the decor.

Mermaid Tail Blankets

Keep the mermaid theme going with cozy mermaid tail blankets, perfect for snuggling and imaginative play. These will make a great addition to the goody bags.

Mermaid Crown Headbands

Provide beautiful mermaid crown headbands adorned with shimmering seashells and starfish for each little mermaid.

Mermaid-Themed Bath Towels

A mermaid-themed bath towel with colorful scales can be a practical and fun party favor, encouraging the kids to get excited about bath time.

Seashell Soap

Hand out seashell-shaped soaps that add a touch of the ocean to your little guests’ daily routines.

Ocean Coloring Books

Offer Ariel-themed coloring books with crayons, providing a creative activity for the kids and a lovely keepsake to take home.

Mermaid Keychains

Gift little mermaids with mermaid tail keychains, a daily reminder of their fantastic mermaid adventure at your party.

By adding these fantastic decor ideas, mouthwatering treats, engaging activities, and delightful party favors, your Little Mermaid-themed birthday party will be a splashing success. It’s all about creating a magical and memorable experience for your birthday girl and her friends. Plus, the best part is that these mermaid birthday party ideas work for a range of age groups, from little kids to older mermaid enthusiasts.

RELATED: 55+ Disney Princess Gift Ideas for Girls

In the end, your little mermaid will shine in her own magical mermaid party, and you’ll create unforgettable memories. As always, I hope this blog post has been helpful, and if you have any questions or need further assistance, please don’t hesitate to ask. Have a “fin”-tastic time planning your mermaid party theme!


  • Kayla Peloquin

    A blogger, Social Media Specialist and digital influencer, Kayla is the founder and driving force behind, a blog designed to provide party planning ideas, family travel tips, and fun DIY projects with her Millennial 'Girl Mom' audience. She has partnered with several brands, a few favorites include Walt Disney World, Google, Coca-Cola, Carters and LEGOLAND Florida. This venture perfectly fits her current lifestyle with two young daughters.

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