Bring the magic of the ocean right to your kitchen with these fun and colorful Aquarium Jello Cups! Made with bright blue Jello, playful gummy fish, and a sandy cookie bottom, these easy no-bake treats look just like a miniature aquarium in a cup. They’re perfect for birthday parties, summer gatherings, ocean-themed celebrations, or simply as a fun afternoon activity with the kids.

You may also like to try our Ocean Jello Cups

What makes these Aquarium Jello Cups extra special is how the gummy fish appear to swim right inside the Jello, creating a realistic underwater scene that kids absolutely love. Best of all, they’re simple to prepare, affordable, and can be made ahead of time for stress-free entertaining.

Why You’ll Love These Aquarium Jello Cups

• Easy no-bake dessert
• Kid-friendly and fun to assemble
• Perfect for ocean-themed parties
• Great summer treat
• Make-ahead friendly
• Budget-friendly ingredients
• Looks impressive with minimal effort

Servings

Makes 6 Aquarium Jello Cups

How To Make Aquarium Jello Cups for Kids 🐠

Step 1: Prepare the Ocean Floor

In a small bowl, combine the crushed cookies with the melted butter. Divide the mixture evenly between six clear dessert cups, gently pressing it down to create a sandy ocean floor.

Step 2: Make the Jello

In a large mixing bowl, dissolve the blue Jello powder in the boiling water. Stir for 2 minutes until completely dissolved.

Add the cold water and stir well.

Allow the mixture to cool slightly for about 10 minutes.

Step 3: Create the Aquarium

Carefully pour the blue Jello mixture over the cookie layer in each cup, leaving a little room at the top for decorations.

Place one gummy fish into each cup.

Refrigerate for approximately 1 hour until the Jello begins to thicken slightly but is not fully set.

Step 4: Add More Fish

Once the Jello is partially set, gently place another gummy fish into each cup at different heights. This creates the illusion that the fish are swimming throughout the aquarium.

Return the cups to the refrigerator and chill for an additional 3 hours or until fully set.

Step 5: Decorate and Serve

Before serving, top each cup with a small swirl of whipped cream. Add extra gummy fish, candy seashells, or blue sprinkles for a fun underwater finishing touch.

Serve chilled and enjoy!

Canadian Cooking Adventures Tips

• Clear cups work best so the underwater aquarium effect is visible.
• For a more realistic ocean color, use Berry Blue Jello.
• Add fish in stages so they appear suspended throughout the Jello.
• Mini gummy sharks, dolphins, or sea creatures make fun additions.
• These cups are a great activity for kids to help assemble.

Storage

Store covered in the refrigerator for up to 3 days.

Do not freeze, as freezing can change the texture of the Jello.

Perfect For

• Summer parties
• Ocean-themed birthdays
• Classroom celebrations
• Beach-themed gatherings
• Family movie nights
• Kids’ sleepovers

These Aquarium Jello Cups are a delightful way to bring a little underwater adventure to dessert time. With colorful fish swimming through crystal-blue Jello and a sandy cookie ocean floor, they’re guaranteed to make a splash with kids and adults alike!