Best Sea Party Invitations of 2026

Name: Under The Sea Birthday Party Invitations by GREOXG
Brand: GREOXG

Corey Phillips

Last Updated: 7 Feb 2026

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If you're planning a beach or sea-themed party, you'll want to check out these Sea Party Invitations. These invitations are perfect for any ocean lover and feature colourful designs of sea creatures, shells, and waves. The invitations come in a variety of styles, from simple and elegant to fun and playful, so you can choose the one that best suits your party theme. They are high-quality and easy to customize with your party details, making them a great choice for anyone looking to add a touch of seaside charm to their event.

At a Glance: Our Top Picks

#TOP 1

Under The Sea Birthday Party Invitations by GREOXG

9.8

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#TOP 2

10 Personalised Mermaid Birthday Invitations with Envelopes

9.7

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#TOP 3

EUDOSI Under the Sea Birthday Invitations Set

9.5

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Top 6 Sea Party Invitations

#TOP 1

Under The Sea Birthday Party Invitations by GREOXG

GREOXG
Ocean animals-2
4 x 6 inch

Under The Sea Birthday Party Invitation, Ocean Animals Invite Cards（20 Count) With Envelopes, Fill In Style Invite Cards For Boys, Girls, Kids, Birthday Party Supplies-A12

The GREOXG Ocean Animals Invites are perfect for your child's birthday party. With 20 invitations and 20 matching envelopes, you'll have everything you need to get started. Each card measures 4 x 6 inches, providing ample space for you to write personalised messages. Made from high-quality coated paper, these durable cards are designed for easy filling with various pens. The eye-catching colours and well-presented details will surely impress your guests and set the tone for a fantastic underwater celebration.

9.8

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What We Like

High-quality coated paper
Ample writing space
Includes envelopes
Durable and easy to use
Vibrant, eye-catching design

#TOP 2

10 Personalised Mermaid Birthday Invitations with Envelopes

Generic

10 Personalised Mermaid Birthday Invitations Party Invites Childrens Kids Sea

The Mermaid Birthday Invitations are perfect for your child's special day. You receive ten personalised invitations, complete with plain white envelopes, making it easy to send them out. Each card is A6 size and crafted from premium quality 300gsm glossy finish material, ensuring a vibrant look. You can even write on the reverse side, as it's non-glossy, allowing you to add personal messages. Simply select 'Customise Now' to personalise your invitations effortlessly.

9.7

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What We Like

Personalised for unique celebrations
Includes plain white envelopes
High-quality glossy finish
Writable non-glossy backside
Easy customisation process

#TOP 3

EUDOSI Under the Sea Birthday Invitations Set

EUDOSI
EUDOSI126
4 * 6 inch

EUDOSI Under the Sea Birthday Party Invitations Supplies Fill-In Set of 20 with Envelopes Whale Crab Sea Life Birthday Party Invites Cards, Double Sided

The EUDOSI Sea Invitations offer a special design that reflects the party's theme, helping you set the tone and show your personal style to your guests. The set includes 20 double-sided cards and matching envelopes, providing everything you need for your celebration. Each card measures approximately 4 by 6 inches, a perfect size that is easy to handle and fill out. With dedicated spaces for date, time, location, RSVP details, and more, these invitations make it simple for you to share all essential party information clearly and neatly.

9.5

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What We Like

Unique themed design
Includes 20 cards and envelopes
Double-sided, good size cards
Easy-to-write surface

#TOP 4

Chuxvon Under The Sea Birthday Invitations

Chuxvon
Multicolor
6 x 4 inch

Chuxvon Birthday Party Invitations, Under The Sea Birthday Invitations, Double-Sided Watercolor Ocean Animals Themed Fill In Invites, Ocean Birthday Party Decorations, 20 Cards With 20 Envelopes(B04)

The Chuxvon Birthday Invitations are beautifully designed cards that set the perfect tone for your child's birthday celebration. Each package includes 20 invitations and 20 matching envelopes, making it easy to send out invites to friends and family. Measuring 6 by 4 inches, these cards are a convenient size, allowing you to write personalised messages with ease. Made from high-quality card stock, they are sturdy and eco-friendly, ensuring that your invitations are not only attractive but also durable and environmentally conscious.

9.3

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What We Like

Beautifully designed invitations
Includes matching envelopes
Durable and eco-friendly material
Easy to write on
Perfect for children's parties

#TOP 5

Shark Birthday Invitations with Envelopes Pack

Foosproea
Multicolor
4” x 6” inch

Shark Birthday Invitations with Envelopes - Under the Sea Party Invitation Card for Boys - Sharktastic Attack Themed Fill-in Invites Cards - Ocean Party Celebration (20 Pack)-02

The Foosproea Shark Invitations are perfect for your child's birthday party. Each pack includes 20 high-quality invitation cards and matching envelopes, ensuring you have enough for all your guests. The 4” x 6” size provides ample space for your personalised messages. Made from premium heavy card stock, these invitations are thick and easy to write on, preventing smudging from any pen type. With their vibrant, double-sided design, these cards will surely impress your friends and family, setting the tone for an unforgettable celebration.

9.3

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What We Like

High-quality card stock
Vibrant, eye-catching design
Convenient fill-in format
Includes matching envelopes

#TOP 6

10 Personalised Mermaid Birthday Invitations

Generic

10 Personalised Mermaid Birthday Invitations Party Invites Childrens Kids Sea Under The Sea Girls Girlie Glitter Effect Fin

The Mermaid Birthday Invitations provide a delightful way to invite guests to your child's special day. With ten personalised invitations and plain white envelopes, you can create a unique touch for each invite. The A6 glossy finish cards are made from premium quality 300gsm material, ensuring durability and a vibrant look. Plus, the non-glossy reverse allows you to easily write personal messages, enhancing the overall experience for your guests.

9.3

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What We Like

High-quality glossy cards
Customisable for personal touch
Includes envelopes for convenience
Easy to write on reverse

Editor's Notes

During our sea party invitation research, we found 111 sea party invitation products and shortlisted 6 quality products. We collected and analyzed 4,093 customer reviews through our big data system to write the sea party invitations list. We found that most customers choose sea party invitations with an average price of £10.83.

The sea party invitations are available for purchase. We have researched hundreds of brands and picked the top brands of sea party invitations, including GREOXG, EUDOSI, Chuxvon, Foosproea.

Written by

Corey Phillips

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.