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Collection: Under The Sea Theme Birthday Party NZ

An under the sea theme for your birthday party in NZ is a great way to delight your child, and our Party Box has all the supplies you need to make your little ones feel like they’re exploring beneath the waves. This box includes tableware, centrepieces, and balloon supplies for an unforgettable underwater celebration. If you’re looking for supplies for a themed party, whether it’s a child’s birthday, a Christmas celebration, or another holiday entirely, you’ll find everything you need at My Party Box. Feel free to contact us at 021-1819990 if you’d like any advice on planning your dream celebration.
32 products
  • Under The Sea Party Box
    Under The Sea Theme Birthday Party NZ
    Regular price
    From $30.00
    Sale price
    $30.00
  • Party in Your Bubble - Under the Sea
    Party in Your Bubble - Under the Sea
    Regular price
    From $98.50
    Sale price
    $98.50
  • Under The Sea Mini Box
    Under The Sea Mini Box
    Regular price
    $150.00
    Sale price
    $150.00
  • Mermaid Mini Box
    Mermaid Mini Box
    Regular price
    $125.00
    Sale price
    $125.00
  • Shark Shaped Foil Balloon
    Shark Shaped Foil Balloon
    Regular price
    $15.50
    Sale price
    $15.50
  • Shark Party Hats PK8
    Shark Party Hats PK8
    Regular price
    $29.99
    Sale price
    $29.99
  • Seashell Dinner Plate PK8
    Seashell Dinner Plate PK8
    Regular price
    $19.99
    Sale price
    $19.99
  • Under The Sea Dinner Plates PK8
    Under The Sea Dinner Plates PK8
    Regular price
    $20.00
    Sale price
    $20.00
  • Shark Platters PK4
    Shark Platters PK4
    Regular price
    $24.50
    Sale price
    $24.50
  • Under The Sea Fish Napkins PK16
    Under The Sea Fish Napkins PK16
    Regular price
    $18.50
    Sale price
    $18.50
  • Classic Metallic Silver Paper Cup PK10
    Classic Metallic Silver Paper Cup PK10
    Regular price
    $6.99
    Sale price
    $6.99
  • Pastel Blue Plastic Cutlery 24PC
    Pastel Blue Plastic Cutlery 24PC
    Regular price
    $4.99
    Sale price
    $4.99
  • Under The Sea Cupcake Kit PK24
    Under The Sea Cupcake Kit PK24
    Regular price
    $29.99
    Sale price
    $29.99
  • Classic Metallic Silver Paper Lunch Box PK5
    Classic Metallic Silver Paper Lunch Box PK5
    Regular price
    $16.50
    Sale price
    $16.50
  • Under The Sea Garland
    Under The Sea Garland
    Regular price
    $35.50
    Sale price
    $35.50
  • Shell Napkin PK16
    Shell Napkin PK16
    Regular price
    $18.50
    Sale price
    $18.50
  • Blue Confetti 15g
    Blue Confetti 15g
    Regular price
    $2.99
    Sale price
    $2.99
  • Plastic Rectangular Tablecover-Frosty White
    Plastic Rectangular Tablecover-Frosty White
    Regular price
    $4.00
    Sale price
    $4.00
  • 18" (45cm) Fashion Blue Latex Balloon
    18
    Regular price
    $1.50
    Sale price
    $1.50
  • 12" (30cm) Fashion Blue Latex Balloon
    12
    Regular price
    $1.00
    Sale price
    $1.00
  • 5" (12cm) Fashion Blue Mini Latex Balloons
    5
    Regular price
    $0.30
    Sale price
    $0.30
  • 24" (60cm) Pastel Matte Blue Round Latex Balloon
    24
    Regular price
    $6.50
    Sale price
    $6.50
  • 18" (45cm) Pastel Matte Blue Latex Balloon
    18
    Regular price
    $1.50
    Sale price
    $1.50
  • 12" (30cm) Pastel Matte Blue Latex Balloon
    12
    Regular price
    $1.00
    Sale price
    $1.00
Under The Sea Theme Birthday Party NZ

Tableware and Centrepiece Package

Our tableware and centrepiece package contains the following party supplies, which are perfect if you have an under the sea theme for your birthday party in NZ:
  • 1 x (8pk) Seashell Plate
  • 1 x(16pk) Under The Sea Fish Napkins
  • 1 x (24pk) Pastel Blue Plastic Cutlery
  • 1 x (4pk) Shark Platters
  • 1 x (10pk) Classic Metallic Silver Paper Cup
  • 1 x Shark Shaped Foil Balloon
  • 25 x 12cm Crystal Latex Clear Balloon
  • 1 x (15g) Blue Confetti
  • 1 x Plastic Rectangular Tablecover Frosty White
  • 1 x Balloon Pump
  • 1 x (25M) Balloon String
  • 5 x 3M Ceiling Hanging Clicks
  • 10 x Balloon Hanging Clicks
We also have a 24pc Under The Sea themed cupcake kit for a fun twist to your dessert table!


Balloon Garland Package

Our balloon garland is a great way to transform your living room with an under the sea theme for a birthday party in NZ! This package contains:
  • 1 x (100) Balloon Glue Dot
  • 1 x (25m) Balloon String
  • 1 x Balloon Pump
  • 1 x 45cm Fashion Blue Latex Balloon
  • 15 x 30cm Fashion Blue Latex Balloon
  • 15 x 12cm Fashion Blue Latex Balloon
  • 1 x 45cm Pastel Matte Blue Latex Balloon
  • 15 x 30cm Pastel Matte Blue Latex Balloon
  • 15 x 12cm Pastel Matte Blue Latex Balloon
  • 1 x 45cm Standard White Latex Balloon
  • 15 x 30cm Standard White Latex Balloon
  • 15 x 12cm Standard White Latex Balloon
  • 1 x Under The Sea Garland

Helium Free Indoor Options

If you’re planning to host your party indoors, we have an economic, helium-free option for setting up your balloons and bringing the under the sea theme for your birthday party in NZ to life. With our 3M ceiling hooks and Clik Hangs, you can save the cost and trouble of filling your balloons with helium. If you want to set up your party outdoors, you will need to purchase helium and extra balloon weights from a local party supplier.

Balloon Garland Assembly

The balloon garland will take you around 2 hours to assemble, depending on your experience. Click here for our video tutorial on putting it together. If you’re in Auckland, we also provide a balloon assembly service. For availability inquiries, please contact us at 021-1819990.

My Party Box Has All The Under The Sea Theme Party Supplies You Need

Does your child want an under the sea theme for their birthday party in NZ? Our Party Box has everything you need. Just scroll to the bottom of this page to place an order, or contact the friendly My Party Box team at 021-1819990 for any questions. We look forward to helping you create a magical celebration!