Mermaid Cakes are trending big this year and gosh - I just love them! With that in mind, I invited members of my All Things Cake group to share some of their best Mermaid Cakes and I've chosen a few to mix in with mine and share 13+ Mermaid Party Cake Ideas!
If you're looking for inspiration for your Mermaid Cakes - this post will hook you up! Also - they're not all pictured in the collage, so be sure to keep scrolling until you get all the way to the bottom!

Quite honestly, the mermaid trend has been around so long, I was sure it would've died out by now. And maybe it did fizzle for a while but it's on fire again now and everywhere I turn - I'm seeing Mermaid birthday parties, Mermaid baby shower cakes and Mermaid-themed sweets in every variety!
So without further delay - I'm going to share more than a dozen Mermaid Cakes and I hope you find at least one that you love!
Mermaid Cakes
Most recently, I made this Mermaid Unicorn Cake:
This Mermaid & Unicorn Cake was such a fun cake to put together. It would've never occurred to me to mix the Mermaid & Unicorn theme, but it was so dreamy and everything about the party was just magical! I'll share all the details about this cake in a separate post soon (I hope).
Apparently, though, the idea was not completely unique...
...because here's another cake with a mermaid and a unicorn. I think this was the first cake shared in the thread when I asked you to share your Mermaid cakes and I instantly knew I loved this quirky and sweet cake designed by the birthday girl herself 🙂 Cake design executed by Stacey Cakes.
Sweet Peas Cakery made this darling Mermaid cake! Every tier is just a delight, from the waves at the bottom, the sand tier in the middle all the way to the top covered in pearls. Love, love, love!
In contrast to the previous cake, this Mermaid Birthday Cake was lighter and the pastels just made it so soft and pretty. This cake was made by LW Cake Design.
As I was scrolling through all of the cakes shared with me in the group, this one caught my attention right away. The watercolor look of the cake beneath all the gold is just stunning! It's so clean and elegant and just WOW! This Mermaid Cake was done by Danielle at A Piece of Cake.
Bonus - here's one more super cute Mermaid cake by A Piece of Cake:
And still... there's more 🙂
Switching gears a bit, this is obviously a much smaller Mermaid cake, but it's just so cute and perfect. I love the special details, like the ombre name on the front and the marbled fondant for the mermaid tails. Just so unique! This cake was done by J Desserts.
Sometimes simplicity is best and this cake by I Bake You Enjoy is just lovely and pretty and simple and stunning. I love the added details of the gold seaweed and pearls... little details that make a big impact!
This sweet little Mermaid Cake is another example of "less is more". My client only needed a small cake so I kept the details to a minimum and only used a couple of colors but overall - the effect was a precious little cake. Details about this cake are posted here.
Every time I look at this Mermaid Cake by Jo Takes the Cake, I see another detail I adore. The colors are pretty unique (very little blue) and then there are other touches of unique. The beautiful lettering, the perfectly sculpted mermaid, the sequined 7 on top... I could go on and on. It's simple, yet elegant and quite perfect.
This one from KT Cakes and More. The sweet topper caught my eye, but also all of the ruffles in multiple colors. I know that took hours and hours of work and the effect was definitely worth it!
One last birthday cake by yours truly... this cake was a treat to make! I've been making this little girl's birthday cakes for years and every year, Mom chooses such a pretty theme! This Mermaid theme party was no exception!
This Mermaid Drip Cake by Smartie Box is everything! It has cotton candy colors, drip, gold leaf, meringues, and macarons... all.the.things. I love it so, so much!! For a fantastic Canned Frosting Hack to make drip cakes, check out this post.
Mermaid cakes aren't just for birthdays...
Baby Shower Mermaid Cakes
I'm always fascinated by cake artists who can sculpt beautiful figures, so this Mermaid Baby Shower Cake by Shabby Chic Cake Boutique was an easy choice to share. Every tier of the cake is stunning, but that topper just really takes it to the next level!
I've also done a baby shower cake... this Under the Sea Mermaid Cake! The colors for this baby shower were so rich and beautiful! The deep pinks and purples with the gold against the lighter blue just popped! I couldn't have been more happy with how this cake turned out!
Mermaid Cupcakes
Mermaid cupcakes are also really popular! I didn't get any really great pics of them, but they were really pretty! I did mermaid tails, shells and other "under the sea" toppers to tie them all together.
Speaking of cupcakes, my friend Susan (again from I Bake You Enjoy) also made some Mermaid Cupcakes! I love how she did the sprinkles on the bottom - SO fun and pretty!
And to finish up, if you're looking for more sweet treats with the mermaid theme, check out these cake pops and dipped OREOs by N&N Cakes. I can't imagine how long it took to make those if she had a big order!
Okay - I know I didn't even scratch the surface of sharing all of the gorgeous cakes you all shared with me but thank you for contributing and if you're not a member of All Things Cake, please hop over and request to join now!
April
Thanks for sharing! So many great ideas!
Rose
You're welcome 🙂
Cora Barkhuizen
So beautiful!!! Real master pieces.
Michelle aldana
Would like to learn more about how to make fondant these are so amazing
Michele Michael
These are darling. I reposted on our condo page on FB . I told people this was a way to see mermaids when they visit our Okaloosa Island Beach Condo.
Rose
Love! Thank you!!
Mallory Fontenot
Hi Rose,
My name is Mallory and I noticed that you do use crisco like me in your buttercream and its the same ratio i use. I do find that I have a hard time getting smooth cakes but I notice how smooth your cakes are above. I tried high rational shortening this weekend andnits is sort of smoother and creamier but im not sure i like the after taste. Any tips or tricks!
Thank you
Rose
It has taken me years of practice to get the buttercream smooth. I usually allow it to crust, then smooth it with a Viva papertowel. I have step-by-step pics of this process in my book: Cake Decorating for Beginners.