Mermaid Slime Recipe
Glitter, shimmer, and that dreamy ocean swirl, this Mermaid Slime Recipe is about to be your kid’s new favorite thing.
We’ve tried a bunch of slime ideas, but this one? A total hit. It’s got that stretchy, fluffy texture kids can’t get enough of, plus the sparkly colors give it serious under-the-sea vibes.
If you’ve been wanting to make slime for kids that’s equal parts fun and sensory, you’re in the right place. This DIY fluffy slime doubles as a calming mermaid sensory activity and brings a splash of magic to playtime.
So, whether you’re planning an ocean-themed afternoon or just want to whip up a sparkly slime that looks like it came straight from a seashell, this mermaid slime recipe DIY has you covered. Think of it as your go-to ocean slime recipe that’s simple, colorful, and totally magical.

Why This Mermaid Slime Is a Must-Try for Kids’ Craft Time
There’s just something about mixing up your own slime that turns an ordinary afternoon into the best day ever, especially when it’s loaded with sparkles and looks like it came from a mermaid’s treasure chest. This mermaid slime checks all the boxes: it’s fun to squish, super easy to make, and gives major magical ocean vibes. Plus, when you make it yourself, you get to control the colors, glitter, and texture so whether you want it extra fluffy or full of shimmer, you’re totally in charge.
This isn’t just any DIY project, it’s a full-on mermaid slime recipe DIY experience that kids will want to make over and over. It also makes a great party activity, a rainy-day boredom buster, or even a themed sensory play idea. If you’re looking for a summer, beach or ocean-themed craft or your little one loves anything sparkly, glittery, or inspired by the sea, this DIY fluffy slime will be perfect. Keep reading for the full step-by-step guide to making your own magical mermaid slime!
How To Make Fluffy Mermaid Slime
Some of these links are affiliate links meaning if you purchase from these links, I will earn a commission at no extra cost to you. Everything I share is my own opinions and things I personally use and love. You can learn more by reviewing my disclosure. As an Amazon affiliate, I earn from qualifying purchases.
Making this fluffy mermaid slime is way easier than it looks, and you probably already have most of the ingredients at home. With the perfect mix of texture and sparkle, this mermaid slime recipe is great for sensory play, themed activities, or just some creative fun. Here’s everything you need to bring that ocean magic to life:
Supplies: Mermaid Slime Recipe
Yields: 1 cup

- 1 Elmer’s clear glue
- 1 C water
- ½ tsp borax
- Food coloring: blue, green, and purple
- Glitter– any color/texture
Directions
Step 1. Place 1 cup of water in a glass measuring cup with ½ tsp of borax. Microwave for 30-45 seconds and stir until borax is dissolved.

Step 2. In a large bowl add 1 bottle of clear glue. Add food coloring, 4 drops blue/ 2 green / 1 purple. Stir until colors are incorporated.


Step 3. Add 1 tsp of borax water at a time and stir. Continue to add borax water 1 tsp at a time until the mixture is no longer sticky.


Step 4. Add glitter and fold it into the slime.


Step 5. Store in a plastic container with a tight-fitting lid or ziplock baggie.

Note:
- food coloring amounts may be adjusted to your personal preference.
- This recipe took 15 teaspoons (5 tablespoons) of water/borax mixture
How to Use Mermaid Slime + Easy Tips for Play
Once your mermaid slime is ready, it’s time for the real fun to begin! Kids can stretch it, squish it, swirl it, and even pretend they’re deep-sea divers discovering sparkly ocean treasures. This DIY fluffy ocean-themed slime is perfect for open-ended play, and it’s such a great way to keep little hands busy while also supporting fine motor skills and sensory exploration.
Here are a few fun ways to use your mermaid slime:
- Ocean Adventure Play: Add sea creature toys or mini shells to the slime for a full-on mermaid sensory experience.
- Color Mixing Fun: Make two or three batches in different ocean tones, like teal, lavender, and light blue, then swirl them together for a magical blend.
- Calming Tool: The soft texture and slow movement make this a great fidget or calm-down activity for kids.
- Themed Birthday Craft: Hosting a mermaid or under-the-sea party? Let kids make slime for kids as part of the fun and send them home with their own sparkly slime in jars.

Tips for Best Results:
- Always store slime in an airtight container to keep it from drying out.
- If the slime gets sticky after a few days, add a few drops of contact solution and knead it again.
- Avoid carpet and fabric, this stuff loves to stick where it shouldn’t. Play on a tray or washable surface.
- Younger kids? Supervise play to make sure no one tries to taste the slime.
With these simple tips, your mermaid slime DIY will stay magical and mess-free. Whether it’s a weekend craft or part of a themed sensory bin, this mermaid slime is guaranteed to be a hit every time.
Conclusion
That’s it, your complete guide to the most magical mermaid slime recipe ever! This DIY fluffy slime brings the perfect mix of fun, creativity, and sensory play. It’s one of those simple activities that never gets old, and the sparkles? Always a win.
Don’t forget to switch up the glitter, colors, or add-ins to make it your own. Whether you’re using this ocean slime recipe for calm-down time, party favors, or just to make slime for kids on a rainy afternoon, it’s always a hit. Grab those supplies, let the kids get messy (in a good way), and watch their faces light up with every squish and stretch of their new favorite mermaid slime.
If your child loves slime, check out these other fun slime recipes:
- Ocean Slime
- Glow in the Dark Slime
- Insect Slime
- Crunchy Slime
- Spider Slime
- Gold Slime
- Leprechaun Butter Slime
Check out other fun sensory bottle ideas:
- Calming Sensory Bottle
- Sensory Bottle with Hair Gel
- Unicorn Sensory Bottle
- I Spy Sensory Bottle
- Pom Pom Sensory Bottle
- 4th of July Sensory Bottle
- Butterfly Sensory Bottle
- Magnetic Sensory Bottle
- DIY Rain Stick Shakers
- Summer Sensory Bottle
- Easter Sensory Bottle
- Fall Sensory Bottle
- Winter Find-And-See Sensory Bottle
- Calming Sensory Bottle
Check out these other sensory bin ideas: