Before we dive in—thank you for being here! This craft is one of my favorites because it’s part sensory play, part art project, and completely mesmerizing. The Under the Sea Ocean Slime is perfect for kids who love ocean adventures, sparkly treasures, and getting their hands into something satisfyingly squishy.
Honestly, once you see those glittery waves swirling between your fingers, you might just “accidentally” keep the slime for yourself.
What Is Under the Sea Ocean Slime?
It’s a soft, stretchy slime colored like shimmering ocean water and decorated with glitter and tiny “underwater treasures.” It feels like holding a little piece of the sea in your hands—minus the sand between your toes.
Why You’ll Love This Slime
🫧 Endless Sensory Fun – Smooth, stretchy, and oh-so-satisfying to squish.
🐠 Ocean-Themed Play – Perfect for pairing with toy sea creatures for pretend play.
✨ Customizable Design – Add glitter, shells, beads, or fish confetti to make your slime unique.
🖐 Fine Motor Skill Builder – Kneading and stretching work little muscles while engaging the senses.
The Sensory Experience
Imagine the cool, squishy feel of slime paired with the sparkle of glittery blue water. Every stretch catches the light, like sunbeams breaking through waves. The tiny beads or shells add a gentle texture that mimics treasures hidden beneath the sea.
Ingredients You’ll Need
- 1 cup clear or white school glue
- 1/2 cup water
- 1/2 tsp baking soda
- 1–2 tbsp saline solution
- Blue food coloring or liquid watercolor
- Glitter
- Small ocean-themed beads, shells, or fish confetti (optional)
Tools for Preparation
- Mixing bowl
- Spoon or spatula
- Measuring cups & spoons
- Airtight container for storage
Optional Add-Ins & Variations
🌈 Color Variations – Try teal, turquoise, or even a layered effect with purple and green.
🌸 Scented Slime – Add lavender or peppermint essential oil for an aromatic twist.
🏝 Beach Theme – Mix in tiny plastic palm trees or mini sand dollars for a tropical feel.
Step-by-Step Instructions
Step 1: Mix Glue & Water
Combine 1 cup of glue with 1/2 cup water in a mixing bowl. Stir until smooth.
Step 2: Add Baking Soda
Stir in 1/2 tsp baking soda until fully dissolved.
Step 3: Add Color & Glitter
Drop in 2–3 drops of blue coloring and mix. Sprinkle in glitter for sparkle.
Step 4: Activate the Slime
Slowly add 1 tbsp saline solution while stirring. The slime will start to clump.
Step 5: Knead It
Once clumping, knead the slime with your hands for 1–2 minutes until stretchy and smooth.
Step 6: Customize
Mix in beads, shells, or confetti for extra ocean flair.
Step 7: Store
Place slime in an airtight container to keep it fresh for weeks.
Tips for the Perfect Slime
- Too sticky? Add a touch more saline solution.
- Too stiff? Add a drop or two of water.
- Want super shimmer? Use holographic glitter—it sparkles like sunlit waves.
Storage & Safety
- Store in an airtight container to prevent drying.
- Always wash hands before and after play.
- Keep slime away from carpet, fabric, and hair.
Frequently Asked Questions
Can I make it taste-safe?
Traditional slime isn’t edible—if you want a taste-safe version, use a cornstarch-and-water base instead.
Will food coloring stain hands?
Most brands won’t stain after mixing into the slime, but start with a small amount just in case.
How long does it last?
With proper storage, your slime can last 2–3 weeks.
In Summary
The Under the Sea Ocean Slime is a magical mix of color, sparkle, and texture that turns any afternoon into an imaginative ocean adventure. Whether you’re planning a beach-themed party, homeschooling science day, or just a rainy-day craft, this slime is a surefire hit.
More Sensory Play Favorites
🌊 Bubbling Ocean Sensory Play
🫧 DIY Bubble Dough
🏖 DIY Kinetic Sand
Share Your Ocean Creations!
Tried this slime? I’d love to see your glittery waves!
📸 Tag your photos on Pinterest or share in the comments with your favorite add-ins.
If you’d like, I can now create a full sensory play series post that combines this slime, the Car Wash Foam Bin, and the other activities you’ve shared into one cohesive, kid-friendly guide. Would you like me to make that next?
