Mermaid Water Gun Painting – Fun Outdoor Summer Art Project for Kids
- Jessie

- 3 days ago
- 6 min read
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If you’re looking for the perfect summer craft to make a splash, you’re going to fall in love with Mermaid Water Gun Painting! This magical outdoor art project combines the excitement of squirt gun painting with the enchanting world of mermaids — the perfect combo for kids who dream of under-the-sea adventures!
Instead of using boring old paintbrushes, kids get to fill up squirt guns with washable paint and spray their canvases with bursts of bright, ocean-inspired colors. It’s messy in the best way, and watching the paint splatter and blend feels like creating mermaid magic with every squirt!
The real treasure is revealed when kids peel away their mermaid stencils or stickers and discover crisp, beautiful mermaid shapes hidden under the colorful splatter. From flowing tails to seashell crowns, every masterpiece is unique — just like every mermaid under the sea!
What makes Mermaid Water Gun Painting extra special is that no two paintings will ever look the same. Kids can experiment with rainbow color combos, different angles, and layer upon layer of color to make their mermaid really stand out. It’s the perfect way to celebrate creativity and sunshine all at once.
This outdoor craft is a lifesaver for summer boredom and a fun way to get kids moving. They’ll be giggling and running around the yard, aiming their water guns at the canvas, and watching their undersea art come to life. Plus, the mess stays outside — always a win for parents!
Hosting a mermaid-themed party or backyard playdate? Set up a Mermaid Water Gun Painting station! Add bubbles, seashells, and some ocean tunes to create a magical mermaid lagoon. Kids will love comparing their masterpieces and showing off their colorful under-the-sea creations.
If your little artists can’t get enough mermaids, be sure to check out our other fin-tastic crafts! Pair your Mermaid Water Gun Painting with our Mermaid Clothespin Puppets, Seashell Mermaid Crowns, or Under-the-Sea Coloring Pages for a full day of ocean-inspired fun.
So grab your squirt guns, your favorite mermaid stencils, and a rainbow of paint colors — it’s time to dive into a magical world of creativity! Mermaid Water Gun Painting is more than just an art project; it’s a splashy adventure that turns a sunny afternoon into an unforgettable mermaid masterpiece.
Materials Needed:
Printable Mermaid Template
Scissors
Vinyl Sticker Paper
Tempera paint (washable and non-toxic)
White acrylic paint
Water
Water guns (one for each color is extra fun!)
Canvas (8x10 or larger)
Plastic cups or squeeze bottles for mixing paint
Old clothes or paint smocks (things can get messy!)
Drop cloth or tarp (optional, to protect grass or fences)
Step-by-Step Directions to make Mermaid Water Gun Painting

Step 1: Make Your Mermaid
Start by printing the template provided at the bottom of this post onto 8.5” x 11” vinyl sticker paper. The vinyl works best because it helps resist moisture and holds its shape while your kids are squirting paint all over the canvas. Then carefully cut out the shape.
Want to create your own template? No problem! You can also draw your own mermaid directly onto the vinyl sticker paper or even onto masking tape and cut it out by hand.

Step 2: Place Your Mermaid on the Canvas
Once you have the shape is cut out, it’s time to get creative! Carefully peel off the backing and place the sticker onto your canvas however you’d like. Play around with different placements — you can place it the middle or to a side. Press each sticker down firmly so the edges stick well — this helps the sticker resist the paint and stay crisp when you peel it off later.

Step 3: Seal the Mermaid with White Paint
Now it’s time for a super important step that you do not want to skip! Once your sticker is stuck down, use white acrylic paint to brush over the canvas — make sure to cover the sticker and the edges all around each side.
Why is this step so crucial? Even though your vinyl sticker is flat, your canvas has a slight texture, which means there will be tiny gaps between the sticker and the canvas. If you skip this step, the paint from your squirt guns can seep underneath the sticker and ruin the crisp shape you worked so hard on!
The white paint acts like a sealer. It fills in any little gaps around the edges of the sticker and keeps the other colors from bleeding through. Once the first layer of white paint is dry, add another coat just to be extra safe. It’s a small step that makes a huge difference for keeping your edges sharp and clean when you peel the sticker off later!

Step 4: Prep Your Paint & Load Squirt Guns
In plastic cups or squeeze bottles, mix the tempera paint colors in different cups with a bit of water until it’s thin enough to squirt easily through the water gun. Each brand of paint is a little different, but a 50/50 ratio of paint to water is usually a good starting point. You’re aiming for a milk-like consistency — not too thick, not too runny! If the water gun is struggling to get the paint out, just add a little more water until it flows smoothly. Be careful not to add too much water though, or your colors might look too light and washed out.
Carefully pour each color into its own water gun. Kids love having one gun per color so they can switch up their designs and create bold, layered masterpieces. Make sure the caps are sealed tight so there are no leaks or surprise splashes! I even like to take a permanent marker and write what color is in each gun — it makes it easy for kids to grab the right shade without any mix-ups.

Step 5: Set Up Your Canvas
Set up your canvas outside. Tape it to a fence, easel, or lay them flat on the ground with a drop cloth underneath. The bigger the canvas, the bigger the blast zone for your little artists!
Step 6: Let the Fun Begin!
Hand over the squirt guns and let your kids go wild! Encourage them to try spraying from different angles and distances. Watch as they layer colors and create amazing splatter effects — no two paintings will ever be the same!

Step 7: Let It Dry & Peel Off the Star Stickers
When your little artists are done spraying, set the artwork aside to dry completely. You can clip the canvases to a clothesline, lean them against a fence, or just leave them flat in the sunshine — whatever works best to keep them safe while they dry.
Once the paint is totally dry, it’s time for the best part: peeling off the mermaid sticker! Carefully lift each one to reveal bright, crisp white dragon that stayed protected while the rest of the canvas turned into a beautiful, splattered explosion of colors.
This step is always so satisfying for kids (and adults too!). Watching those bold mermaid pop through the messy, colorful background is so exciting. It’s so much fun and each piece of art is truly unique.
The fun doesn’t stop here! At Artsy Kids Zone, we’ve got a whole bunch of creative projects waiting to be explored. From playful paper crafts to interactive printables, there are hundreds of hands-on activities to keep little artists busy, learning, and laughing.
Whether your kiddo wants to craft a pirate puppet, make a hatching dragon egg, or try their hand at magical crayon resist art, we’ve got something to spark every imagination. Our projects are made with kids in mind—easy to prep, fun to make, and perfect for classrooms, rainy days, or weekend adventures at the kitchen table. So don’t be shy—dig in, get messy, and let your child’s creativity run wild at Artsy Kids Zone!

How To Download Printable Mermaid Template:
How to download the Printable Mermaid Template? Simply sign up to become a member of Artsy Kids Zone to gain access to our exclusive downloads. The best part is that memberships are completely FREE! Not only will you gain access to this art project, but you'll also unlock a treasure trove of Artsy Kids Zone downloads. By signing up, you are agreeing to receive emails from Artsy Kids Zone with updates, new craft ideas, and special offers. It’s a great way to stay inspired and keep your little ones engaged with fun, creative activities!
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