The Little Mermaid Ariel Birthday Party ~ Ideas, Food, Crafts & More

My daughter fell in love with The Little Mermaid the day she found her sister’s singing necklace. She was 13 months old and she toddled around the house singing Ahhh, ahhh, ahhh… So it was only fitting that her second birthday should be The Little Mermaid themed. I had so much fun creating the perfect under-the-sea party. 

First, it was all about setting the mood for our “under the sea” Little Mermaid Birthday party. Playing on the color themes of purple, blue and green, I designed my own Birthday Invitation and matching thank you notes. Then I had my invitations printed by Shutterfly.

Money Saving Tip, you can order plain picture cards from Shutterfly and upload your own image for the front of the card and the inside page. That gives you two invitations per card, then when they arrive just cut them apart. I used a coupon code for 10 free Shutterfly cards, which resulted in 10 invitations — all I paid was shipping.

Little Memaid Ariel Birthday Invitation

When the guests arrived, they were swept away into a magical world filled with trinkets and bobbles and fishy themed treats. 

Little Mermaid Ariel Birthday Party Decorations

The Little Mermaid party food ideas:

  • Pirates Booty
  • Fishes
  • Oyster Cookies
  • Under the Sea (Jello cups)
  • Nautical Nuggets
  • Tritons of Fruit

To match my invitations, I also designed a silhouette poster of Ariel and matching food labels. The Ariel poster and labels are available for free download here

Little Mermaid Birthday Party Food

Little Mermaid Party Themed Food

Little Mermaid Birthday Party decorations

Ariel presided over the lunch table, keeping close watch on her bobbles.

Shopping list: The Little Mermaid plates, lime green and blue paper straws, plastic cups with lids (I bought 50 two years ago, and we are still using them up!).

Little Mermaid Ariel Birthday Party Table Decoration

Jellyfish Decoration

I seriously love how these turned out. Find out how I made these (super easy) with my Jellyfish decoration tutorial.

DIY Jellyfish Party Decoration Craft

Decorations also included treasures from Ariel’s Grotto scattered about by the sea. (Ordinary beach shells turned sparkly with glitter spray paint.)

Little Mermaid Birthday Party Decorations Details

Activities included The Little Mermaid coloring pages – Download The Little Mermaid Coloring pages

Disney Little Mermaid Ariel Coloring Pages

Little Mermaid Cake

The pull-apart cupcake cake was from Walmart. Not only was it adorable, it was delicious!

Little Mermaid Ariel Birthday Cake

Mermaid Tails

No mermaid party is complete without mermaid tails. So my big project for the party was designing and making mermaid tails for all of the little girls. Completely my own design, they turned out perfect.

They are actually fairly simple to make. For instructions, check out my Mermaid Tail Tutorial.

  Little Mermaid Tails

Little Mermaid Ariel Tail

All of the little mermaids were enchanted with their tails, but none more than the birthday girl.

Little Mermaid DIY Tail

Happy 2nd birthday baby girl!

Little Mermaid Birthday Shirt

The Little Mermaid Birthday Party Supplies:


  1. Love your party! Is the invitation available also?

  2. So glad I came across this. What did you put inside the mermaid jello cups?

    • So glad you like everything! They are Swedish Fish. BUT I learned the hard way, don’t put the fish in while the jello is setting or the color runs. Instead when you are ready to serve slice a slit with a knife, insert the Swedish fish and top with whipped cream. Otherwise they look more like a dark blob than a fish. They turned out much better when I did it this way for another party. 🙂

  3. Hi, I was wondering how you did the background?

    • The backdrop is a large insulation panel ($10 – $20 at Home Depot depending on size/thickness). I covered that in a white plastic tablecloth ($1.99). Then I taped two blue and purple crepe paper ($.99 each) together at the end and attached to the top of the board. As I came down the board, I twisted the crepe paper to give it the spiral effect. Then I taped the crepe paper to the bottom and started at the top again. It is a slow process, but the effect is awesome. I use that same insulation panel as the backdrop for all of my parties, just covering it in different tablecloths or cloth and other pinned on decorations. Have fun!

  4. What is the filling for your oyster cookies?

  5. Kapri Rose Roberts says:

    what is the pearl in the cookies? so cute!

  6. Hi there! This is too cute! I’m going to make mermaid tails for my three girls for Halloween this year and love your simple design! But when I click on the link to go to the tutorial, it takes me back to the main party page. Can you repost it?

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