By remaining on the Site or clicking “OK,” you consent to Zazzle’s Terms of Use and Privacy Notice, and to Zazzle’s use of cookies and similar technologies (including those provided by third parties), which retain information to enable the Zazzle experience, track interactions, advertise, and for other related purposes. You may opt-out of this tracking by updating your cookies preferences.

Save 25% on Select Cards & Invitations * Shop Now ➞

Love It or We'll Take Back! Extended Returns Until January 2026 *

Search for products or designs

Sell on Zazzle쑢Shopping Cart

WeddingsOpens a menu with links to top wedding-related pages.

Wedding Invitations ➞
Wedding Stationery ➞
Be My Bridesmaid Cards
Bridal Shower Invites
Enclosure Cards
Engagement Party Invites
Hen Party Invitations
Reception Invites
RSVP Cards
Save the Dates
Thank You Cards
Wedding Décor ➞
Guest Books
Menus
Napkins
Place Cards
Plates
Programs
Seating Charts
Wedding Signs
Table Numbers
Favour Packaging ➞
Beer Labels
Can Coolers
Favour Bags
Favour Tags
Magnets
Stickers & Labels
Water Labels
Wine Bottle Labels
Showers & Parties ➞
Bridal Shower Supplies
Hen Party Supplies
Wedding Gifts ➞
Bridesmaid Gifts
Groomsmen Gifts

All Weddings ➞

Wedding Stationery & Décor
From save the dates to signage, design every detail of your day.

Invitations & StationeryOpens a menu with links to top invitations & stationery-related pages.

Birthday Invitations ➞
Kids' Birthday Invitations
Adult Birthday Invitations
Joint Birthday Invitations
1st Birthday Invitations

Baby Invitations ➞
Baby Shower Invitations
Birth Announcements
More Invitations ➞
Christening Invitations
Christmas Invitations
Communion Invitations
Graduation Invitations
Halloween Invitations
Moving Announcements
Party Invitations
Greeting Cards ➞
Anniversary Cards
Birthday Cards
Christmas Cards
Father's Day Cards
Graduation Cards
Mother's Day Cards
New Baby Cards
Thank You Cards
Valentine's Cards
Personal Stationery ➞
Note Cards
Postcards
Post-it® Notes

Mailing Accessories ➞
Envelopes
Envelope Seals
Return Address Labels
Rubber Stamps & Ink

All Invitations & Stationery ➞

Cards & Invitations 
Personalise premium stationery for any event or milestone.

Gift Wrap & Party SuppliesOpens a menu with links to top crafts & party supplies-related pages.

Gift Wrapping ➞
Gift Bags
Gift Tags
Ribbon
Stickers & Labels
Tissue Paper
Wrapping Paper
Party Signs ➞
Backdrops
Banners
Posters & Prints
Party Stationery ➞
Guest Books
Menus
Place Cards
Programs
Table Numbers
Party Tableware ➞
Paper Cups
Paper Bowls
Paper Napkins
Paper Plates
Favours & Packaging ➞
Can Coolers
Favour Bags
Favour Boxes
Favour Tags
Food & Drink Labels

All Gift Wrap & Party ➞

Gift Wrap & Party Supplies
Make their day with personalised wrapping & party decorations.

Business EssentialsOpens a menu with links to top office & school-related pages.

Business Cards ➞
Bakery Business Cards
Beauty Business Cards
Construction Business Cards
DJ Business Cards
Hair Stylist Business Cards
QR Code Business Cards
Name Tags & Badges ➞
Marketing Materials ➞
Appointment Cards
Brochures
Flyers
Gift Certificates
Loyalty Cards
Menus & Price Lists
Referral Cards
Displays & Packaging ➞
Display Cards
Hang Tags & Inserts
Product Labels

Business Stationery ➞
Notebooks
Post-it® Notes
Rubber Stamps & Ink
Business Signs ➞
Banners
Posters & Prints
Window Decals

Calendars ➞

All Business ➞

Business Essentials
Boost your brand with quality business cards & marketing materials.

Art & HomeOpens a menu with links to more categories of top pages.

Mugs ➞
Funny Mugs
Photo Mugs

Barware ➞
Beer Glasses
Can Coolers
Shot Glasses
Whiskey Glasses
Wine Glasses
More Homeware ➞
Aprons
Blankets
Christmas Tree Decorations
Cushions
Posters & Prints ➞
Abstract Posters
Botanical Posters
Fine Art Posters
Nursery Posters
Travel Posters
Vintage Posters

Art & Home 
Style your space with personalised posters, cushions, mugs & more.

T-Shirts & Accessories

T-Shirts ➞
Men's T-Shirts
Women's T-Shirts

Birthday T-Shirts
Funny T-Shirts
Photo T-Shirts
Vintage T-Shirts
Wedding T-Shirts
Accessories ➞
Badges
Beach Towels
Hats
Luggage Tags
Socks
Ties
Tote Bags
Sports & Games ➞
Golf Balls
Playing Cards
Puzzles

T-Shirts, Tote Bags & More
From business to birthdays to bridal showers, customise items for any occasion.

Create Your OwnOpens a menu with links to top Create-Your-Own products.

T-Shirts & Accessories
Badges
Hats
Socks
Ties
Tote Bags
T-Shirts

Sports & Games
Golf Balls
Playing Cards
Puzzles
Art & Home
Aprons
Blankets
Christmas Tree Decorations
Cushions
Mugs
Posters
Gift Wrap & Party
Paper Napkins
Party Signs
Stickers
Wrapping Paper
Business
Business Cards
Flyers
ID Badges
Post-it® Notes
Invitations & Stationery
Greeting Cards
Guest Books
Invitations
Menus
Programs
Return Address Labels
Rubber Stamps
Save the Dates

All Create Your Own ➞

Create Your Own
Make your own mugs, t-shirts & more with our easy design tool.

Invitations & Stationery

쎃

쎃

Popular Under The Sea Thank You Cards

563 results

Invitations & Stationery

Thank You Cards

Weddings

Thank You Cards

Flat...

Folded...

Magnetic...

Horizontal...

Vertical...

Rectangle...

Square...

Bracket...

Rounded...

Scalloped...

Tag...

12.7 x 17.8 cm...

10.1 x 14.2 cm...

10.8 x 14.2 cm...

11.4 x 15.9 cm...

13.3 x 13.3 cm...

8.9 x 5.1 cm...

8.9 x 12.7 cm...

Under $5

$5 to $15

$25 to $50

Design Colour

Number of Photos

Letterpress

Foil

Type

Format

Orientation

Shape

Size

Price

Design Style

Special Picks

Events & Occasions

Recipients

Brand

Creator Store

Makers

Design Options

Colour

Sort by:

Save 25%

Ocean Thank You Card

Sale Price $3.30.$3.30 Original Price $4.39.$4.39

Save 25%

Elegant Teal Gold Underwater Floral Fish Wedding Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Coastal Chic Modern Coral Reef Party Thank You Card

Sale Price $3.48.$3.48 Original Price $4.64.$4.64

Save 25%

Mermaid Girl Birthday Party Photo Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Save 25%

Little Pearl Photo Baby Shower Thank You Card

Sale Price $3.27.$3.27 Original Price $4.35.$4.35

Mermaid Tail Scale & Pearl Boutique Shop Thank You

Price$34.75

Save 25%

Mermaid Girl Birthday Party Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Under the Sea Baby Shower Thank you Kawaii Pastel Postcard

Price$2.95

Mermaid in Rose Gold with Seashells Thank You Postcard

Price$3.15

Save 25%

Fish Thank You Notecards

Sale Price $3.93.$3.93 Original Price $5.24.$5.24

Save 25%

Pink Gold Elegant Starfish Seashell Baby Shower Thank You Card

Sale Price $4.65.$4.65 Original Price $6.19.$6.19

Save 25%

Mermaid Girl Birthday Party Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Save 25%

Chic Nautical Anchor Beach Modern Wedding Thank You Card

Sale Price $3.07.$3.07 Original Price $4.09.$4.09

Magical Mermaid Under the Sea Girls Thank You Postcard

Price$2.95

Miss Mermaid Party Thank You Postcard

Price$3.03

Save 25%

Under The Sea Thank You Cards Blue Octopus

Sale Price $4.12.$4.12 Original Price $5.49.$5.49

Save 25%

Mermaid Girl Birthday Party Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Save 25%

Mermaid Girl Birthday Party Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Save 25%

Elegant Cute Little Blush Sea Mermaid Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Cute Whale Mother And Her Baby Thank You Card

Price$1.23

Chic Elephant Nautical Boy Baby Shower Thank You Postcard

Price$2.95

Whimsical Pink Mermaid Tail Thank You Card

Price$1.24

Save 25%

Blue Rustic Ocean Dolphin Whale Boy Baby Shower Thank You Card

Sale Price $4.65.$4.65 Original Price $6.19.$6.19

Save 25%

Cute Dive In Underwater Submarine Any Age Birthday Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Miss Mermaid Party Thank You Postcard

Price$3.03

Save 25%

Boy Nautical Whale Baby Shower Thank You Card

Sale Price $3.63.$3.63 Original Price $4.84.$4.84

Save 25%

Nautical Whale Under the Sea Blue Boy Baby Shower Thank You Card

Sale Price $3.11.$3.11 Original Price $4.14.$4.14

Cute and Happy Blue-Green Jellyfish Thank You Postcard

Price$3.33

Save 25%

Two The Sea Pirate Ship Mermaid 2nd Birthday Party Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Adorable Dolphin Thank You Card

Price$1.24

Save 25%

Cute Dive In Underwater Submarine Any Age Birthday Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Cute Dive In Underwater Submarine Yellow Birthday Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Modern Ahoy Boy Whale Sailboat Baby Shower Thank You Card

Sale Price $4.65.$4.65 Original Price $6.19.$6.19

Ocean Under the Sea Animal Baby Shower Thank You Postcard

Price$2.95

Save 25%

Purple Rustic Pearl Seashell Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Rustic Princess Mermaid Ocean Coral Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Gender Neutral Vintage Whale & Duck Baby Shower Thank You Card

Sale Price $4.65.$4.65 Original Price $6.19.$6.19

Save 25%

Pink and Gold Mermaid Thank You Card

Sale Price $3.30.$3.30 Original Price $4.39.$4.39

Save 25%

Boho Elegant Ocean Beach Coral Blue Wedding Thank You Card

Sale Price $3.48.$3.48 Original Price $4.64.$4.64

Save 25%

Rustic Boho Ahoy Boy Whale Sailboat Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Modern Under The See Whale Nautica Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Under The See Sweet Whale Floral Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Whale Family Baby Shower Thank You Card

Price$1.23

Save 25%

Mermaid Girl Birthday Party Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Save 25%

Blue Minimalist Boho Ocean Dolphin Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Save 25%

Mermaid Thank You Cards

Sale Price $2.96.$2.96 Original Price $3.94.$3.94

Miss Mermaid Party Thank You Postcard

Price$3.03

Save 25%

Pink Cute Ocean Dolphin Girl Baby Shower Thank You Card

Sale Price $3.37.$3.37 Original Price $4.49.$4.49

Miss Mermaid Dark Hair Thank You Postcard

Price$3.03

Save 25%

Cute Pink Axolotl Under the Sea Birthday Thank You Card

Sale Price $3.22.$3.22 Original Price $4.29.$4.29

Save 25%

Mermaid Foil Tail Silver Faux Chrome Custom Thank You Card

Sale Price $3.48.$3.48 Original Price $4.64.$4.64

Save 25%

Conch shell iridescent beach seashells nautical thank you card

Sale Price $3.03.$3.03 Original Price $4.04.$4.04

Save 25%

Blue Beige Simple Nautical Anchor Baby Shower Thank You Card

Sale Price $4.65.$4.65 Original Price $6.19.$6.19

Save 25%

Mermaid Birthday Photo Thank You Invitation

Sale Price $3.75.$3.75 Original Price $5.00.$5.00

Save 25%

Under The Sea Birthday Photo Thank You Invitation

Sale Price $3.75.$3.75 Original Price $5.00.$5.00

Save 25%

Pink Sea Turtle Whimsical & Cute Thank You Card

Sale Price $4.83.$4.83 Original Price $6.44.$6.44

Save 25%

Cute and Happy Blue-Green Jellyfish Thank You Card

Sale Price $3.52.$3.52 Original Price $4.69.$4.69

Save 25%

Cute Mermaids Under the Sea Watercolor Thank You

Sale Price $3.78.$3.78 Original Price $5.04.$5.04

Save 25%

Mermaid Girl Birthday Party Photo Thank You Card

Sale Price $3.60.$3.60 Original Price $4.79.$4.79

Save 25%

Cute Dolphin Sea Creature Thank You

Sale Price $3.45.$3.45 Original Price $4.59.$4.59

쎂Previous 6 7 8 9 10 Next쎃

The Zazzle Promise

Love It Guarantee
Don't love it? We'll take it back! 30-day returns “100% Love It Guarantee.”
Easy International Delivery
Hassle-free shipping with no surprise fees. We cover any customs & duties.
Secure Shopping Guaranteed
100% Secure payment with SSL Encryption.

Search Feedback

Did you find what you were looking for?

YesNo

If you need help or have a question for Customer Service, please visit our Help Centre