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Shop Under the Sea Party Supplies Online
Bring the wonders of the ocean to your celebration with our colourful collection of Under the Sea Party Supplies. From playful sea creatures to shimmering ocean colours, this versatile theme is perfect for children's birthdays, baby showers and summer celebrations. Choose balloons, tableware, cake decorations and party favours featuring fish, turtles, whales, dolphins, octopus, sharks, coral and other marine favourites.
Create an Under the Sea Birthday Party
Transform your party space into an underwater world with shades of blue, aqua, turquoise and teal. Add colourful Balloons around the cake table or party area, then layer in fish, bubbles, coral and sea creature decorations to bring the ocean theme to life.
Ocean Balloons & Underwater Decorations
Sea creature balloons and ocean-inspired colours make an eye-catching combination for an underwater celebration. For a larger feature display, use one of our Balloon Garland Kits to frame the cake table, entrance or photo area.
Under the Sea Party Tableware
Create a coordinated food and cake table with ocean-inspired Party Tableware. Mix themed plates, cups and napkins with complementary blue shades to create a setting that feels like it belongs beneath the waves.
Ocean-Themed Cakes & Cupcakes
Carry the underwater theme through to your desserts with sea creature and ocean-inspired cake decorations. Browse our Cake Toppers to add an easy finishing touch to birthday cakes, cupcakes and dessert displays.
Under the Sea Party Bags & Favours
Continue the adventure after the party by filling Party Bags with small toys, stickers, sweets and ocean-inspired surprises. You can also explore our Party Favours for more take-home treats for your guests.
Mix Under the Sea & Mermaid Decorations
For a more magical underwater celebration, combine colourful marine life with decorations from our Mermaid Party Supplies. Shells, pearls, pastel colours and shimmering finishes work beautifully alongside fish, coral and other ocean designs.
Make a Splash with an Underwater Celebration
Whether you're planning an ocean birthday, sea creature party, baby shower or underwater adventure, choose a few key colours and repeat them across your balloons, tableware, cake and favours. This creates a coordinated party while allowing colourful marine characters to stand out. Browse our Under the Sea Party Supplies and make a splash at your next celebration.
Frequently Asked Questions
What do I need for an Under the Sea party?
Start with an ocean-inspired colour palette, then add sea creature decorations, balloons, tableware, cake decorations, party bags and favours. Fish, turtles, whales, sharks, octopus and coral can all help create the underwater theme.
What colours work best for an Under the Sea party?
Blue, aqua, turquoise, teal and white create a classic ocean look. Add purple, coral, pink, green or shimmering metallic accents for a brighter underwater celebration.
What sea creatures can I include in an ocean party theme?
Popular choices include fish, turtles, dolphins, whales, sharks, octopus, seahorses, starfish, crabs and other marine creatures. Mixing several designs can create a fun underwater scene.
Can I combine Under the Sea and Mermaid party decorations?
Yes. Mermaid decorations work beautifully with ocean themes. Combine shells, pearls, mermaid tails and pastel colours with fish, coral and blue decorations for a magical underwater setting.
What balloons work well for an Under the Sea party?
Sea creature balloons can be combined with blue, aqua, turquoise and white balloons. Balloon garlands in several ocean-inspired shades also make an effective backdrop for the cake or photo area.
What can I put in Under the Sea party bags?
Stickers, small toys, novelty items, sweets and other age-appropriate favours make fun party bag fillers. Choose ocean colours or sea creature designs to continue the theme.
Is an Under the Sea theme suitable for a baby shower?
Yes. Soft blue, aqua, mint and pastel ocean decorations can create a lovely Under the Sea baby shower theme, especially when paired with gentle whale, turtle or sea creature designs.
Do you ship Under the Sea Party Supplies Australia-wide?
Yes. Online Party Supplies offers fast Australia-wide shipping on Under the Sea decorations, balloons, tableware, cake accessories and party supplies.