Celebrate Your Most Cherished Moments

Mermaid Under The Sea Party Ideas

Add an alluring flair to your decor with creative ‘mermaid under the sea’ party ideas. Whether planning a birthday for your little one or organizing a baby shower, this wonderful combination of greens, blues, purples and soft pinks will add a dreamlike feel to your surroundings.

Don’t miss any of the fun and excitement preparing the foods and drinks you’ll be serving in advance. Get creative using croissant pastries that look like crabs, star shaped cutters for delicious sandwiches and star shaped slices of fruits. You can also make blue jelly cups and drinkable sea water by adding a few drops of food coloring into a jug of cold water. An under the sea theme offers unlimited original opportunities!

From balloon arch kits and hanging jellyfish to fishnet tablecloths, discover enchanting ‘mermaid under the sea’ party ideas that will help you create an exciting decor for your celebration. For additional information on any of the mermaid decorations, simply click on the provided link and you’ll be directed to one of our awesome partners.


Your guests will view this vibrantly colored mermaid under the sea balloon arch with awe! The kit includes different sizes of high quality latex and Mylar balloons. It makes for a wonderful party addition! Other beautiful balloon kit design available but this one is perfectly suited to your theme.

Mermaid Under The Sea Balloon Arch Kit Party Decor
Bumblecollective (Etsy Store) – Mermaid Under The Sea Balloon Arch Kit

Have everyone dress the part with these mermaid party shirts. Made of 100% cotton, each shirt comes with your choice of a hair color and is embroidered with the age of the child. This shirt is guaranteed to cause excitement!

Mermaid Party Shirt
JoasEmbroideryStudio (Etsy Store) – Mermaid Party Shirt

For a cherished keepsake of your party, this personalized mermaid guest book makes for an adorable way for your guests to share their wishes. Made to order, the hard cover book features a faux leather finish and a ribbon tie closure. Use it as a guest book, scrapbook or gorgeous photo album.

Personalized Mermaid Party Guest Book
PrintsAndBooksHouse (Etsy Store) – Personalized Mermaid Party Guest Book

For a photo prop that will add to your party decor, this mermaid letter made of paper mache is quite impressive. Available in several sizes, the letter is hand-painted on both sides while the front is beautifully embellished with various coral shapes, a shell and a real starfish.

Mermaid Letter Photo Prop Party Decor
ChiLaPea (Etsy Store) – Mermaid Letter Photo Prop

Add a festive flair to your decor with this mermaid under the sea paper tassel garland. In mint green, blue, turquoise, aqua and purple, each tassel is 13″ long on a 10′ of twine. Birthday and name banners are also available if that’s more your style.

Mermaid Under The Sea Paper Tassel Garland Party Decor
FancifulChaos (Etsy Store) – Mermaid Themed Paper Tassel Garland

This set of three jellyfish paper lanterns comes in purple, sea foam green and pink. Hang these cuties from the ceiling to accentuate your ‘mermaid under the sea’ party decor.

Under The Sea Jellyfish Lanterns Party Decor
partytreasuresco (Etsy Store) – Jellyfish Paper Lanterns

Many other adorable ‘mermaid under the sea’ decorations are available from partytreasuresco (Etsy Store)

This mermaid fishnet table runner and cupcake stand make for practical and lovely additions to your theme.

Available in your choice of color and mermaid tail attachment, this set of 12 party straws will be a hit with your little party goers! These mermaid tail party straws will add a pop of color to your tablescape.

Mermaid Tail Party Straws
CouronnesParties (Etsy Store) – Mermaid Tail Party Straws

Made to order, this lovely mermaid cake topper can be personalized with the name of your child. It’s available in your choice of size: 6″ or 8″.

Mermaid cake Topper
BoitedeFetes (Etsy Store) – Mermaid cake Topper

Cover all your celebration needs with these mermaid disposable tableware supplies. Featuring an attractive under the sea design, these party supplies are eco-friendly and BPA-free.

Mermaid Party Disposable Dinnerware
BestPartyCarftSupply (Etsy Store) – Mermaid Party Disposable Dinnerware

Your cupcakes will have never been better adorned with these lovely mermaid bubble shaker toppers. Personalize them with the age of your child for a wonderful surprise and enhancement to your dessert display!

Bubble Shaker Mermaid Cupcake Toppers
LidasCraftShop (Etsy Store) – Bubble Shaker Mermaid Cupcake Toppers

Candy bars or sweet stations make for delectable ‘mermaid under the sea’ party ideas! There are so many candies available for this theme that it’s impossible to resist setting up a beautiful display. If you do, you’ll need these awesome mermaid food labels! The set comprises 6 labels that you can customized with your own wording and adorned with glitter ocean details. Very pretty!

Candy Bar Mermaid Food Labels
ChiKaPea (Etsy Store) – Candy Bar Mermaid Food Labels

If you’re in need of party favor idea, this mermaid tail hand sanitizer label comes in a choice of design and is personalized with the name and age of your kid. You need only peel and stick on your hand sanitizer bottles.

Fill these adorable mermaid treasure chest favor boxes with a special treat or trinket for a special favor for your party guests. Made with high quality textured card stock, the images are printed with a high quality setting. These treasure boxes make for creative mermaid under the sea party ideas!

Mermaid Under The Sea Treasure Chest Favor Boxes
THISMOMCRAFTSSTORE (Etsy Store) – Mermaid Treasure Chest Favor Boxes

You may also like:

Safari Themed Party Decor

A Cat in the Hat Dr. Seuss Inspired Decor