Looking for a unique mermaid cake? Find these 25 mermaid cake ideas in so many different designs and flavors, you’ll find the perfect mermaid birthday cake. Mermaid cakes are a popular choice for birthdays, and there are many ways to make them special. One idea is to use fondant to create a mermaid tail. You can also use edible glitter to give the cake an extra sparkle. If you’re looking for something truly unique, try using a mold to create a mermaid-shaped cake. You can also use color flow frosting to create an underwater scene. Whatever approach you choose, your goal should be to create a beautiful and delicious cake. With a little creativity, you can make a mermaid cake that’s one of a kind.
Everyone has a phase in life when he starts imagining the mermaids if they are real and exist, then where they dwell. Half-girl and half-human mysterious creatures have just captured the whole world, and that’s why the mermaid decor and mermaid themes are becoming a hot pick. So, are you celebrating an upcoming birthday with a magical mermaid theme? Then go with these Mermaid Cake Ideas that will significantly add to your party dessert tables.
These mermaid cakes will also complement beach, ocean and nautical birthday décor themes, and even beginner bakery skills will be enough to whip up these cakes. Explore these 25 easy mermaid cake ideas that kids and adults love and appreciate. They will be easy to make and decorate when you have beginner cake-making skills in your hands.

Unique Mermaid Cake Ideas
Most of these cakes capture outstanding underwater scenes that enchant. Moreover, you will see a wide range of Mermaid Cake Ideas with lots of variations. From Barbie mermaid cakes to rainbow mermaid cakes to unique mermaid cake designs, you will get ideas and instructions here. Looking through all these ideas will surely make you choose the best Mermaid cake designs for the kids’ birthdays soon. The list covers all of the single and triple layers of mermaid cake, and they will be easier to make.
1. Delicious Barbie Mermaid Cake Design

The mermaid birthday theme is hot and trendy, and it always rocks for the kids’ birthday parties. So, presenting here this cool barbie mermaid cake that is both delicious and cute and comes with a barbie mermaid sitting on the top. Along with the mermaid, surround it with seashells, starfish, seahorse, pearls and other under the sea items for a mesmerizing ocean theme. One of the best and sweet mermaid cake ideas that everyone will appreciate. Make this cake for any birthday number!
2. Cute Mermaid Cake Decor

Rock your ocean-inspired birthday party theme with this 2 tiered mermaid cake that appears in turquoise and pink colors. The turquoise color represents the ocean water, and you can use the paper mermaid cut out to add to the front side of the cake. Decorate the cake with mermaid tail cake toppers, starfish, seashells, pearls, etc. Write the birthday girl or boy’s name on the cake plate, and everyone will fall for this exceptionally beautiful and cute mermaid cake design.
3. Mermaid 1st Birthday Cake Idea

Depending on your creativity and cake-making skills, you can make mermaid cakes with many design variations. Rock the 1st birthday of your child with this mermaid cake that is double layered and appears with the cake plate as the beach. The bottom cake layer represents ocean waters, while the entire top is made inspired by the mermaid. It features scalloped mermaid scales, and there is also a little mermaid cake topper that explains the whole theme of the cake. The fondant nameplate showing the kids’ names is the whole beautiful feature of this mermaid cake design. The way the ocean waves and waters are created on the bottom cake layer is just amazing.
4. The Dreamiest Mermaid Birthday Cake

The kids are highly obsessed with the mythical mermaids, and they are a part of many kids’ movies and cartoon series. So, Are you willing to throw the upcoming birthday on a mermaid theme? Then you will be looking for the ultimate mermaid cake design, and here you have it. The cake also comes with rainbows on the top with seashells and mermaid tails. This remarkably beautiful cake will surely create a big focal point on your dessert table. One of the best DIY mermaid cake designs ever.
5. Simple Mini Mermaid Cake

Are you deeply in love with the fishtail designs and mermaids? Bring a glam touch of oceans to your parties by making this mermaid cake. It will rock for the upcoming mermaid-themed birthday party also. The cake appears majorly in the pink colors and will really rock for a girl’s birthday, and you can also make it blue for a boy’s birthday. Add up the cake with all the ocean details like pearls, seashells, starfish and beach sand, and everyone will love this small mermaid cake. You can also add more tiers and layers to this cake.
6. Mermaid Theme Birthday Cake Design

Make the upcoming kids’ birthday unforgettable with this mermaid cake, sure compliment the entire mermaid birthday party theme. Whip up this cake for any birthday number of the kids and features tons of ocean details. This mermaid-themed birthday cake features all from seashells to pearls to fishtails, and everyone will praise this sweet cake design. It requires some beginner cake-making skills to whip up this cake, and you can get busy with the buttercream and fondant to easily make all the decorative details for the cake.
7. Personalized Mermaid Cake

Are you looking for some beautiful mermaid cake designs to duplicate for the baby and kids’ birthday bashes? Then opt for this personalized mermaid cake design that you can also choose for the gender selection party. You can print out the custom mermaid templates or printables for the mermaid cake topper and use the gold glitter paper for the birthday number. The addition of mermaid tails and other ocean decor make the entire cake look extra beautiful. The cake appears in blue, purple and pink colors and enchants with the drip design.
8. Creative Mermaid Birthday Cake Ideas

You can simply make the mermaid cake for every special event and celebration. But they will rock for the baby showers and kids’ birthday parties. Have a look at this mermaid cake design that is densely loaded with fondant and buttercream fishtails and also comes with seashells, sea plants, starfishes, pearls and other ocean details. One of the best ocean-inspired birthday party cakes to make at home. You can make this cake for any birthday number, but here it is made for the 6th kids’ birthday, and everyone will love and praise this cake while being displayed on the dessert table enchantingly.
9. Unique Mermaid Cake for Girls

Are you looking for some girlish mermaid cake designs? Duplicate this given unique mermaid cake that is a beautiful single-layer mermaid cake appearing in the brilliant blue color. The cake design feature pink and gold fishtails and seashells, and starfish decor in the respective colors. Use the white pearls to jewel this mermaid cake design more, and everyone will love to duplicate this unique yet impressive mermaid cake design. Don’t forget to display the birthday number and name of the birthday girl on the cake. You can use glitter paper and scrap paper cutouts for this also. A simple yet beautiful mermaid cake design to make at home.
10. Mermaid Cream Cake Design

The mermaid cake design ideas are never-ending, and check out one more amazing mermaid cake design that is amazingly cute and appears in the bright pink and purple colors. The cake design will rock for the girl’s birthdays, and you can also make the custom nameplates and cake fishtail cake toppers to make this mermaid cake appear extra beautiful. It requires beginner cake decorating skills to complete this mermaid cream cake, and it will bring a big wow factor to the entire dessert table. Even if you are a beginner, you can whip up this mermaid cake design.
11. Mermaid Themed Cake

Feel free to duplicate this another precious mermaid cake, made for the 7th kids’ birthday and is looking extremely beautiful and lovely. The cake is 2 tiered and features the scalloped mermaid scales on the 2nd layer, while the bottom layer comes with the name of the birthday kid, and you can use the plastic mermaid toys to add to the top of the mermaid cake for added visual grace. The best mermaid cake features blue and pink colors and a lot of pearls, starfish figurines, and seashells in the same colors.
12. Blue And Purple Mermaid Cake

Do you love drip cakes? Look at this given drip cake that comes inspired by the mermaid theme and looks extremely beautiful. What makes it look super special is the addition of blue and purple colors, and the addition of fishtails brings the mermaid elegance and mystery to this handmade mermaid cake. It will be easier to make this cake even with beginner skills, and you can get crafty with the fondant and buttercream to make the ocean-inspired cake decor and details. Here the cake is densely loaded with fishtails.
13. Pretty Mermaid Sheet Cake

Feel free to make a copy of this single-layer mermaid sheet cake featuring the light green or aqua and purple colors. The turquoise color represents ocean waters, while the little potion with soil represents the beach. The addition of pearls, starfishes and fishtails works great to create that respective amazing look of the cake. You can make this cake a perfect square or rectangle. The choices are all yours. Also, make the matching cupcakes to rock the entire dessert table, and everyone will fall in love with this extremely beautiful mermaid cake design.
14. Adorable Pastel Mermaid Cake

This handmade cake design features pink and pastel shades and an amazing mermaid theme. It will be super easy to decorate also. Just make a single layer round cake, a little taller, then add the custom fishtails, seashells, pearls and other ocean decor and details to the cake for an enhanced appeal. The cake will be a breeze to make even when having beginner bakery skills, and all the party members will praise the amazing ocean-inspired decor and cake toppers. This is another great mermaid cake design to duplicate for the next kid’s birthday bash.
15. Birthday Mermaid Cake Design

The design ideas for mermaid cakes are never-ending, and you can always create a unique mermaid cake using your cake-making skills, cake decorating skills and a little creativity. Due to lots of amazing details, it will take some time to decorate this cake, and it beautifully features the golden, blue, pink and green colors that everyone will fall in love with. Using golden and white pearls in assorted sizes all around the cake will surely create a stunning ocean-inspired aesthetic for the entire cake design. Don’t forget to add the birthday kid’s name on the front of this cake.
16. Unique Little Mermaid Cake

You can play well with the ocean-inspired toys when willing to add the best toppers to the mermaid cakes. This mermaid cake captures a great under the sea scene and features the fish, snails, seashells, sea plants, starfish and other details. Here the octopus, mermaid, fishtail and pearls are used as the brilliant cake toppers, and they add a lot to the beauty of this cake, made for the 3rd birthday of a toddler or kid. This single-layer mermaid cake will impress the entire party audience.
17. Best Ariel Cake Decor

You can play well with your creativity when decorating the cake for a custom theme and appearance. Make the entire party dessert table look beautiful by adding this mermaid cake that is significantly easy to make with beginner bakery skills. This is where the beautiful Ariel cake that is decorated for the 5th birthday of the baby and is extremely easy and quick to make also. This beautiful cake comes in aqua blue colors and with a little touch of green, purple and gold. Use a mermaid paper cut out to add as a beautiful cake topper and other cake toppers, and decorate the entire cake by adding glitter birthday numbers, pearls, starfish, sea plants, starfish and other ocean plants.
18. Purple And Pink Mermaid Cake

Win the heart of the whole birthday crowd with this beautiful handmade mermaid cake featuring purple and pink colors. Make all the cake decor with the fondant like the fishtails, snails, pearls, seashells, and other details, and everyone will praise this super beautiful girlish mermaid cake design. Add the name of the birthday kid and the birthday number to make the cake look extra special, and you need some basic cake decorating skills to complete this one-of-a-kind mermaid cake.
19. Mermaid Tail Cake Design

This mermaid cake is made for the AVA celebrating the 9th birthday. Again the cake appears with a single story and features the green, pink and purple colors, while the bottom cake plate looks amazing with the fabulous aqua appeal. Use fishtails, starfishes and other flowers and seahorses to complete this mermaid cake, sure to be a big love of all the homey people. Don’t forget to add the pearls all around the cake and on the top of the cake. Here the golden fishtails are added as brilliant cake toppers.
20. Adult Mermaid Cake Decor

The mermaid theme is highly trendy, and it impresses everyone from adults to kids. So, this handsome mermaid cake model is presented here that is exceptionally cute and beautiful and made for an adult’s birthday. The cake features pearls, fishtails, Happy Birthday letters, seashells, and many other details. The cake will add to your party decor and will be a total breeze to make with the beginner cake-making and cake decorating skills. Add up the cake with lovely pearls for added visual attractiveness, and everyone will fall in love with this smartly detailed mermaid cake.
21. Buttercream Mermaid Cake

In the world of bakeries, you can do wonders with buttercream, and this mermaid cake is one of those creative buttercream wonders. Most of the cake details and decor are made of buttercream, and it will be quite fun to whip up this unique mermaid cake. The entire cake captures a brilliant ocean scene. The cake features the starfish, sea stones, seashells and other details at the bottom, while the top of the cake is fully loaded with the mermaid fishtails. Everyone will fall in love with this superb and enchantingly colorful mermaid cake.
22. Ombre Mermaid Sprinkle Cake

Feel free to duplicate this fabulous cake that is insanely cute to look at and will be loved dearly by all the kids and adults. The cake appears in pink, blue and purple colors, while the fishtail appears in the brilliant aqua color, making the best cake topper. The cake will be an impressive addition to one’s dessert table and will be remarkably easy to make with your beginner bakery skills. It will not take too long to complete this superb-looking mermaid cake, and everyone will praise this single-layer mermaid cake decorated with colorful icing.
23. Mermaid Fondant Cake for Baby Shower

You can also make the mermaid cakes for baby showers, and gender reveal parties. Get inspired by this given mermaid fondant cake design made for a baby shower and is extremely easy and quick to make with beginner cake-making skills. The cake features a baby mermaid sleeping on the top of the cake and the pearls, starfishes and seashells. Everyone will fall in love with this ultimate mermaid cake, and kids will love to make and eat it for sure. Don’t forget to write the name of the baby on the cake.
24. Rainbow Mermaid Cake

You can also mix the rainbows and mermaids to make outstanding birthday, baby shower, and gender reveal party cakes. Get inspired by this rainbow mermaid cake that is insanely cute and beautiful to look at and will be loved dearly by all party lovers. The rainbows and fishtails on the top of the cake look just great as a fancy cake topper. Decorate the bottom of the cake using the rainbow fishtails, pearls, beach sand and sealants. Also, make sure you are using all the edible materials to make them.
25. Beach Days Mermaid Cake

This cake will surely remind you about those beach parties, picnics and adventures. Here is the best mermaid cake design that features the ombre blue appeal. The fishtail cake toppers and the seashell and starfish bottom access or decor are all selected in creamy white appeal. Add the edible beach sand all around the cake. Also, fancy up the cake more by adding a seahorse accent, and here you go. This cake comes with fewer details and will be loved dearly by all the kids and adults.
Unique Cake Designs and Cake Decorating Ideas
Harry Potter Cake Ideas: A Harry Potter themed cake is a great way to show your love for the series. There are many ways to design a Harry Potter cake, so be clever!
Gender Reveal Cake Ideas: A gender reveal cake is a fun and unique way to reveal the gender of your baby. There are many creative ways to design a gender reveal cake, so get creative!
50th Birthday Cake Ideas: A 50th birthday is a big milestone, so celebrate it with a big cake! There are many ways to design a 50th birthday cake, so be creative and have fun!
Graduation Cake Ideas – Graduation is a special time in a person’s life. It’s a time to celebrate all of the hard work that has been put in and to look forward to the next chapter. See these graduation cake ideas for inspiration that can be a beautiful way to celebrate this milestone.
Minecraft Cake Ideas: A Minecraft themed cake is a great way to show your love for the game. There are numerous ideas to design a Minecraft cake, so be creative!
Dinosaur Cake Ideas: A dinosaur themed cake is a fun and unique way to celebrate a birthday. There are many creative ideas to design a dinosaur cake, so get resourceful!
Conclusion:

These mermaid birthday cake ideas are to introduce to you the best Mermaid Cake Designs and Ideas that you are looking for for your upcoming birthday party. These mermaid cake ideas vary in colors, decor, and layers, and you can choose any fitting your needs, party decor, and party color scheme. All these mermaid cakes are sure to make better handmade birthday gifts also. Just make a normal round or square cake and then add it with the seashell, sea plant, starfish, pearls, and other ocean-inspired accents or decor.