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. Perfect! My daughter LOVES Ariel, too! Thanks for sharing your great ideas!

  2. Too cute! My 10 year old still loves ARIEL! Might need to work on an older girl ARIEL party for her birthday this summer! Can’t wait to share this post with her!

  3. WOW!! I love all of the pictures, especially the ones with clams and fins!! too adorable!!

  4. I love the atmosphere created, especially from the twisted ribbon backdrop & jellyfish!

  5. TLM is my all-time FAV!! I want a party like that! LOL! I love the tails!

  6. Wow, you did an amazing job! What little girl wouldn’t love that! And… you should do parties, professionally! πŸ™‚

  7. How absolutely adorable! I love The Little Mermaid! I have a friend I am going to share your tips with as her daughter is a huge fan!

  8. Oh my goodness! That is the most adorable party! My daughter loves Little Mermaid. This would be perfect for her.

  9. How fun!!!!

  10. You did such a great job with this party! It’s adorable!!! Love the ideas. Pinning!

  11. What a gorgeous party – you put so much into this. I bet she absolutely LOVED it!

  12. so cute! I wish my granddaughter lived closer to me so I could make a party like this for her.

  13. This looks fun! I love the jelly fish, they are too cute

  14. Adorable! Absolutely loving the food and those jelly fish. Can’t wait to read more about the tutorials.

  15. Cute party! I love the mermaid tails!!!

  16. This is darling! I’m in love with the tails! Did you ever post a tutorial for how to make those? I would love to see it, since I’m prepping my daughter’s party this week!

  17. Do you have a pattern for the mermaid tails?

  18. Stephanie says:

    LOVE the mermaid picture!! Did you make it? So excited to do a party like this, not too much cartoon but definitely Ariel!

  19. Oh wow! I absolutely LOVE what you did!!!!

  20. MotherofTwo says:

    This is all so cute! I’m doing this next month! Where can I find the invite and labels for the foods?

    • Thanks πŸ™‚ I haven’t gotten them posted, yet. I am working on the mermaid tail tutorial this week. The printables should be up next week. Have a great party!

  21. Super cute! My daughter wants an Ariel party! Her birthday is next month! I can’t wait to attempt the Mermaid tails πŸ™‚

  22. I would love the mermaid printables, adorable

  23. This is beautiful you did an amazing job. You nailed the theme and the tail – perfection.

  24. Do tell…how did you make those jellyfish??

  25. Christina Hanvey says:

    I LOVE your invitations! Did you make them yourself? Where did you get that template?

    • I designed them myself – it isn’t a template πŸ™‚ I will be sharing the poster and labels this week. Hopefully I will get the invite posted the following week.

  26. Where did you find the little people Flounder and Sebastian? We’ve been searching for them!!

  27. I came across your Little Mermaid Party and just LOVE it. It is the PERFECT amount of Ariel. Not too overdone: beautiful!! I think I will use some ideas for my little mermaid’s birthday party! Thank you for sharing your awesome party. I was just wondering if you have a copy of the invitation that you used? Thank you πŸ™‚

  28. Love this party, you did a fabulous job! I was hoping you would have the jellyfish tutorial up soon? My daughter’s party is in a week. If you are busy, totally understand:)

    • Oh… in theory I’d love to get it up this week. But I just don’t know if it will happen. If it does, I’ll email you a link!

  29. Oh my goodness, how amazing! You really need to start a kids’ birthday business!!

    • Awe – you are too sweet Anne-Marie. I would probably go broke because I spend way too much time on them πŸ™‚

  30. Julie Lewis says:

    I am THRILLED to come across your site and am beyond excited that you’ve been so generous to share printables! My sister is obsessed with Little Mermaid and has begged me to do my little girl’s 1 year old party with an “Under The Sea” theme but I didn’t want too much Ariel. This is just perfect and I’m going to copy you on every detail! Is there a tutorial for the jellyfish?? I’m looking forward to seeing the invitations as a printable as well. You have literally made me so happy and taken such a huge load off my plate. Thanks for sharing!

    • And you made my day Julie!!! I put these things up and I wonder if anyone will ever like/use them, so messages from people who love them make me SOOOO happy. I haven’t done the jellies yet – I am SO slacking because people keep asking me. Oh maybe Friday I can work on the tutorial… Have a great party!!!

  31. Melissa Verhagen says:

    Amazing party! I hope I can pull something off that is even a fraction of this. I only have two weeks! question. What is the pearl, inside the oyster cookies? And is there anything inside the under the sea jello?

    • HI Melissa – Thanks so much!!! You can do it!!! The pearl is a yogurt covered raisin. And inside the jello is a swedish fish. Tip set your jello first, then on the morning of the party use a knife to slice into the jello and insert the swedish fish. If you try to put the fish in when the jello is setting the color will run. Have fun!

  32. Melissa Verhagen says:

    Any way to get a copy of your Ariel invitation? It is so much cuter than anything else I have found on line! And I am horrible on a computer.

    • HI Melissa, Yes, I am now making my invitations available on Etsy. It will be personalized for you, then all you have to do is print it or take it to have it printed. I don’t have the Mermaid one on Etsy right now, I but I do have an Octonaut one. If you want to purchase it, you can purchase the Octonaut one and put a note that it is you and I will prep the Mermaid one for you πŸ™‚

  33. LIZ SPICER says:

    Thanks so much for the free printables….can’t wait to do this Little Mermaid party for our sweet girl, Raylen.

    Thanks so much!

  34. I love your ideas and will try to do some of them. Two questions:
    1. What’s inside the oyster cookies?
    2. Can you send me the food labels in another form that’s not PDF? I cannot add the names I want to them.
    Thank you!

    • Hi Jocelyn – The “pearl” in the oyster is a yogurt covered raisin πŸ˜‰

      The Food Labels are downloadable as a jpeg, not a PDF. As a jpeg, you can upload them to PicMonkey to easily add text.

  35. Thank you for sharing all of these wonderful ideas! I saw that you used vanilla wafers & yogurt covered raisins for the oysters, but what is the filling inside made of? Wasn’t sure if it was something other than frosting…. We are doing a non-Ariel mermaid party for my daughter’s fourth birthday next month & I will definitely be using some of these snack ideas.
    Thanks again!

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

  37. 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. πŸ™‚

  38. 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!

  39. What is the filling for your oyster cookies?

  40. Kapri Rose Roberts says:

    what is the pearl in the cookies? so cute!

  41. 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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