When it comes to summer learning, there is just something about the beach and ocean that seems to call to us all! Whether you are traveling to a beach this year or staying home, you can bring the beach to life with these ocean science experiments!
The experiments on this list are a lot of fun for kids from preschool through middle school and will provide tons of science learning whether your kids have previously been into science or not.
These hands-on ocean experiments will make a science lover out of any kid and are the perfect science fair project ideas for kids who may not love science yet.
Fun Ocean Science Experiment Ideas
If you love the ocean, and you love science, these ocean science experiments are for you! Before you check out the complete list of ocean activities for kids, make sure you have these science supplies on hand.
Ocean Science Supplies
Shop these Amazon Affiliate links to make sure nothing is missing for your ocean science activities.
Ocean Science Books
Here are some fun books about ocean science!
Free Science Lesson Plans
Click the picture below to get 2 complete science lesson plans sent to your inbox!
The Best Ocean Science Experiments for Kids
Hands-down, these ocean science projects are tons of fun for kids! These ocean experiments are perfect for doing at home, in an after-school program, at daycare, or just for fun!
Click each ocean science activity to get to the directions for that project.
This Easy Ocean Slime Recipe is a super fun way to bring the ocean to you, even if you can’t get to one this year!
Learn all about the unicorns of the sea when you make this Narwhal Craft!
This Ocean Slime Recipe uses glitter glue and is fun for kids of all ages.
Learn fun oyster facts for kids when you make this Oyster Craft.
The Jellyfish in a Bottle Science Experiment shows kids how jellyfish can move in the water. And it’s pretty to look at!
When you try the Desalination Science Project, kids will learn how to remove salt from water.
This adorable Paper Plate Seahorse Craft can teach kids all about seahorses and their lives in the ocean.
Make your own Cartesian Diver Experiment and explore how fish, sharks, and even scuba divers move in the ocean!
This Water Density Experiment shows how cold water is denser than hot, and why the ocean has different densities depending on how deep you are.
Learn How to Make Sand Slime using real beach sand!
This Beach Slime Recipe mixes ocean slime with sand slime for a total beach experience.
Kids will love learning how to make these Sand Painting for Kids.
This Ocean Layer Liquid Density Experiment teaches kids about the layers of the ocean.
When you’re ready to do some coloring, these Aquarium Printables are perfect to do while learning about ocean animals.
Octopus Science Experiments
We love octopuses so much, we put together an entire idea list on octopus STEM activities! So many fun ways to learn octopus science!
More Summer Science Experiments
Mindblowing Summer Science Experiments You Must Try This Summer
Crazy-Fun Mermaid Science Experiments Perfect for Summer!