Skip to Content

Crazy-Fun Mermaid Science Experiments Perfect for Summer!

Save this idea for later so you don't forget to use it!

I am a mother of three girls. That means we have a lot of glitter, a lot of pink, and they are both obsessed with unicorns and mermaids.

Recently, we completed a series of unicorn STEM activities, but as the weather has gotten warmer, the kids are more interested in mermaids right now.

They also both really like science experiments for kids. So, I’m sure you know where this is going. It’s time for mermaid science experiments!

If you love learning with mermaids, be sure to check out STEM mermaid activities for kids!

We’ve been doing a lot of awesome science experiments with mermaids. It’s so much fun adapting our favorite STEM activities and science experiments into mermaid themes!

Mermaids are a summer staple. But now they also teach science! Get over a dozen ideas for mermaid science experiments here!

Super Fun Mermaid-Themed Science Experiments

I bet you didn’t know you could combine science and mermaids so easily! We’ve found that these science experiments with mermaids are totally awesome, and some of the most awesome science experiments we have ever done!

If you have any mermaid lovers at home or in your classroom, try these super fun mermaid science activities!

Mermaids for Science? They Don’t Exist?!

Mermaids are just about the farthest thing from science, so, you might wonder how we decided to combine the two. I’ve found over the years that when you use subjects that kids care about, they are more likely to pay attention to the less “fun” parts of the lesson.

So, when kids love mermaids, and you use those mermaids to teach scientific concepts, the concepts will stick. You can even take mermaid science a lot further than we have, by exploring the (theoretical) science of mermaids themselves. How would they breathe?

How would they talk under water? How are they able to breathe water and air? Or are they?

Is a mermaid design scientifically plausible?

Want a fun new twist on summer science? Why not try these awesome science experiments featuring mermaids! Science is so much fun when you can use mermaids to learn. #scienceexperiments #scienceforkids #science #summeractivities #summerlearning

Add these mermaid experiments to you science fair project ideas.

Mermaid Science Lessons

Kids can learn just about any scientific concept with these cool science experiments. 

In our list of mermaid science experiments, kids will learn about states of matter, polymers, chemical reactions, oceans, ocean creatures, currents, how temperature affects movement, how fish rise and sink, how to remove salt from water, and more!

The Scientific Method for Kids

When doing a science experiment, you need to include all elements of the scientific method, which are:

  • Ask a question
  • Research the question
  • Hypothesize an answer
  • Test the hypothesis
  • Analyze the results
  • Change the variables and test again
  • Record the data

Supplies for Mermaid Science Activities

Use these supplies to make your science experiments with mermaids fun and easy! This post contains affiliate links. View our privacy policy for more information.

What You Need for a Science Fair

You’ll want to have these supplies on hand before doing your science fair project. Shop the included Amazon storefronts to make things easier and don’t forget to download the free science fair planning checklist before getting started!

Science Fair Project Planning

When you’re planning your project, you want to keep everything organized. Click the image below to get my free science fair project checklist so you can start organizing your project from the start.

You may also want to check out this list of science fair project research supplies.

Supplies for a Science Fair Project

There are so many supplies for science fair projects that are individual to each project, but if you want a general list of possible supplies and inspiration for your project, check out my selection of science fair experiment supplies on Amazon.

Supplies for a Science Fair Presentation

Your science fair presentation is important! It should look presentable and eye-catching. Check out this list of my favorite science fair presentation supplies.

science fair display board example

Fantastic and Fun Mermaid Science Experiments for Kids

This is a continuously expanding list. These awesome science experiments will only get better each time you check back! My kids are currently obsessed with mermaids, so you can be sure we’ll be doing plenty more mermaid science experiments in the future!

Cool Mermaid Science Experiments!

Mermaid science experiments make science fun for kids. These cool science experiments (sometimes literally!) feature mermaids and are the perfect science experiments for girls and boys who love mermaids and learning ocean science. #scienceexperiments #scienceforkids #science #summeractivities #summerlearning

Learn about polymer chains when you make mermaid slime.

Don’t forget to give your mermaids a home when you make ocean slime.

And don’t forget the beach! Make this sand slime for your mermaids to hang out in.

How do mermaids move through the water? Make this fish version of a cartesian diver to find out.

Learn how mermaids might filter water to drink in this desalinization science experiment!

Awesome Science Experiments with Mermaids

Ever wonder how ocean currents work? Try this convection heat science experiment to find out!

Learn about the science of electricity when you make a Squishy Circuits Mermaid!

Make a pal for your mermaids with a jellyfish discovery bottle.

Help free the mermaids in this fun ice science experiment. 

Super Fun Mermaid Science Experiments for Kids

This mermaid tail discovery bottle is the perfect science lesson in viscosity.

Make your very own mermaid themed bath bombs and learn about chemical reactions at the same time.

Discover the science of air currents when you make these paper plate mermaid twirlers!

Learn about other creatures in the ocean when making an ocean ice melt. Does adding salt help the ice melt faster?

science fair display board example

More Science Experiments for Kids

Tie Dye Slime

Fizzing Pokeballs

Hot and Cold Temperature Science Experiment

Mermaid Craft

Save this idea for later so you don't forget to use it!