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Under the Sea Party for a 3 Year Old Boy

March 22, 2021 by Leslie 2 Comments

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This adorable under the sea party has it all. From stunning party decorations to cute under the sea party food names, you’re guaranteed to be inspired.

Get ready to be the talk of the ocean, because no one will forget your party if you copy these ideas.

photo of a birthday party with a shark decal on the wall and text overlay under the sea party decor food and more

About the Party:

  • Creator: Kate at CupKates Events
  • What Was the Occasion? 3rd Birthday Party
  • Color Scheme: Blues, Orange, and Red
  • Where Was the Party Held? At home, indoors

Unforgettable Party Decorations

Like many of our favorite ocean creatures, Kate’s decorations were big and bold. I think she did a fantastic job creating the feel of an underwater party space with simple items you can find just about anywhere.

collage of shark, octopus, seahorse, and starfish decals on a wall for party decor

Vinyl Wall Decals

The decor with the biggest impact has to be the vinyl decals all over the walls.

The giant shark and octopus are pretty darn cool. But if you look closer you’ll see that there are also seahorses, skates, and starfish too.

Vinyl decals can be fairly inexpensive, and you can even make your own if you have a cutting machine.

They also won’t damage the walls when you want to take them down, which makes them a fantastic choice when you have a lot of wall space to cover.

paper lanterns hanging from a ceiling with ribbons to look like jellyfish tentacles

Floating Jellyfish Lanterns

How’s this for an easy craft? Blue paper lanterns with ribbon hanging out of the bottom to look like jellyfish.

Hang several from the ceiling with monofilament and you’ll feel like you’re right in the middle of a jellyfish bloom.

Tulle Ceiling Drape

The tulle draped on the ceiling really makes you feel like you’re in the ocean looking up at the waves.

Wondering how to get this effect? Here are some easy options:

  • Drop ceilings: Use paperclips, s-hooks, or drop ceiling clips to attach the fabric to the ceiling
  • Industrial/Open Ceilings: If the fabric isn’t too heavy, you may be able to drape the fabric over the pipes or attach it with monofilament.
  • Drywall Ceilings: Thumbtacks or push pins are the most secure option. You can also try heavy duty command strips, but might need to secure the fabric to the command strip with a paperclip.
under the sea dessert and favor table with crepe paper backdrop and crab pot holding up a cake

Favor Table Decorations

The favor table is simply stunning, and so easy to recreate or adapt for just about any party theme. Let’s take a look…

Crepe Paper Streamer Backdrop

If you’re looking for a super duper easy and budget friendly backdrop, this is it.

Crepe paper can be a real pain to work with, but by simply letting it hang from the wall, you get plenty of color and texture with very little effort.

Decorating Tip: Command Strips, Double sided tape, or Blue Tac all work well without ruining your walls.

Crab Basket Centerpiece

One of the most important things to do with a buffet is to add variations in height. Not only does it let you fit more food in a small space, it also makes the table more interesting.

Here Kate used a wood crab basket (basically a large bushel basket) to make the cake and cupcake display really stand out.

RELATED>>>BRIGHT AND COLORFUL CRAB FEAST

Wrapping Paper Risers

You can also see in the photo above that there she used coordinating wrapping paper to add a bit more interest to the table.

In the back are two shirt boxes wrapped in blue polka dot paper, and the Octopops are held up by a sheet of styrofoam covered with wrapping paper.

collage of ocean themed party food including candy sushi, hot dog octopus, salad, fish sticks, and goldfish bar

Under the Sea Party Food

Of course, a party isn’t complete without some tasty eats. The menu featured everyday party foods, with cute ocean-themed names for everything:

  • Octopus in a blanket: Hot dogs with crescent roll dough
  • Fish sticks: shaped like fish!
  • Seaweed spread: spinach dip
  • Sand Dollars: Pop chips
  • Submarine Sandwiches
  • 7 leagues under the sea salad
  • Conch shells and cheese
  • Fishing Poles – Pretzel Sticks
  • Goldfish Bar: a variety of fish crackers and pretzels
  • Sparkling Octopus Ink – Izze sparkling juice cans
  • Freshly Bottled Ocean Water

If you like these ideas, you’ll also love these super easy Under the Sea Fruit Cups.

toddler playing a party game in an inflatable pool filled with balloons

Ocean Themed Party Activities and Games

I’m a big advocate for keeping party games short and sweet for toddlers. And Kate did just that with only two activities.

Baby Pool Fishing:

Kate filled a baby pool (don’t you just love the canopy?) with balloons and let the kids go ‘fishing’ for sea creatures.

The sea creatures were simply sea creature shapes cut out using a Cricut, with a paper clip attached.

The kids had a dowel rod with a magnet glued to the end to use for fishing.

A Note from Kate: I don’t recommend using the balloons because the game was fairly difficult with them in the way.

To make it easier, you might want to:

  • Use blue ball pit balls,
  • Reduce the number of balloons in the pool, or
  • Have no balls or balloons at all (some starfish and shells in the pool will still make it look cute)

Make Your Own Ocean

Kids also got to make their own ocean in a bottle, which is a great sensory activity for little kids.

That said, with all the pouring and messy ingredients, you may want to make sure you have enough adults on hand to help out.

See how to make an ocean in a bottle right here.

A Note from Kate: Make sure you hot glue the lid on! You don’t want a kid to open the bottle, or drink it!

collage of under the sea party favors octopops, sea urchins, cookies, snack mix, and puffer fish balloons

Under the Sea Party Favors

Yes, we discussed the favor buffet decorations, but the party favors themselves deserve a separate mention.

Kate mixed both sweet treats and toys on the favor bar to avoid sending toddlers home with a guaranteed sugar high.

She also continued the fun ocean themed names on the favor bar:

Edible Favors:

  • Shark Attack Snack Mix which included gummy fish and Os.
  • Octopops
  • Sea creature cookies
  • ‘Fresh Sushi’ – Mini rolled cakes wrapped in green fruit leather, with a gummy fish inside
  • Fish Kabobs – Sea creature gummies on a stick

Toy Favors:

  • Sea Mammals – Toy rubber whales and sharks
  • Puffer Fish – Punch Balloons
  • Sea Urchins – Puffer balls
  • Beanie babies and books for younger siblings, and
  • Buckets to hold their loot

More Beach and Ocean Themed Party Ideas You’ll Love:

  • Octonauts to the Launch Bay…It’s an Octonauts Party!
  • 25 Luau Party Ideas to Steal from a Professional Event Planner
  • Mermaid Party Ideas (for when you have NO time to prepare)
  • Splish Splash 4th birthday bash
overhead view of a birthday party table for kids with an orange tablecloth and blue chairs
close up of ocean themed birthday cake

Now It’s Your Turn

Whew! Talk about a lot of under the sea party ideas all in one place!

Even though I first featured this party over 10 years ago, I’m still impressed by all the DIY ideas. Use them for your ocean-themed parties, or adapt the ideas for a different theme. Either way, you’ll be winning.

Now I want to know…

Which of these party ideas do you like best?
Do you have any additional under the sea party ideas you’d like to share?


Join me over at Facebook, Instagram, or Twitter,

for more fun ideas and inspiration!


This post was originally shared with permission on November 9, 2010. It has been updated to provide additional party details and larger photos. Photography was provided by Cellar Door Photography.

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Filed Under: Kids Parties, Parties Tagged With: under the sea

About Leslie

Leslie is the passionate party planner in her family. After being diagnosed with breast cancer in 2018, she was determined to find a way to continue making amazing parties for her kids that don't leave you exhausted. To do that Leslie combines the experience she learned working for a professional event planner with the reality of a busy family life to create party inspiration that the average mom can reproduce and be proud of.

Comments

  1. swankychicfete says

    November 9, 2010 at 2:14 pm

    amazing party!

    Reply
  2. Joanne says

    March 30, 2021 at 1:58 pm

    That looks like an amazing party! I love the wall decals and the jellyfish lanterns.

    Reply

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I love helping busy moms create DIY parties that aren’t overwhelming. Here you'll find crafts, recipes, and fun printables you can use to create a celebration you’re proud of that you get to enjoy too! Read More
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Hi there! I’m Leslie! I love helping busy moms create DIY parties that aren’t overwhelming. At Playdates to Parties, you'll find crafts, ready-to-use cut files, recipes, and fun printables you can use to create a celebration you’re proud of that you get to enjoy too!  {Read More}

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